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Dior, Louis Vuitton, Tiffany Fined $25 Million in South Korea After Data Breaches

Luxury brands were among the dozens of major companies whose Salesforce instances were targeted by Scattered LAPSUS$ Hunters.

The post Dior, Louis Vuitton, Tiffany Fined $25 Million in South Korea After Data Breaches appeared first on SecurityWeek.

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AI chat app leak exposes 300 million messages tied to 25 million users

An independent security researcher uncovered a major data breach affecting Chat & Ask AI, one of the most popular AI chat apps on Google Play and Apple App Store, with more than 50 million users.

The researcher claims to have accessed 300 million messages from over 25 million users due to an exposed database. These messages reportedly included, among other things, discussions of illegal activities and requests for suicide assistance.

Behind the scenes, Chat & Ask AI is a “wrapper” app that plugs into various large language models (LLMs) from other companies, including OpenAI’s ChatGPT, Anthropic’s Claude, and Google’s Gemini. Users can choose which model they want to interact with.

The exposed data included user files containing their entire chat history, the models used, and other settings. But it also revealed data belonging to users of other apps developed by Codeway—the developer of Chat & Ask AI.

The vulnerability behind this data breach is a well-known and documented Firebase misconfiguration. Firebase is a cloud-based backend-as-a-service (BaaS) platform provided by Google that helps developers build, manage, and scale mobile and web applications.

Security researchers often refer to a set of preventable errors in how developers set up Google Firebase services, which leave backend data, databases, and storage buckets accessible to the public without authentication.

One of the most common Firebase misconfigurations is leaving Security Rules set to public. This allows anyone with the project URL to read, modify, or delete data without authentication.

This prompted the researcher to create a tool that automatically scans apps on Google Play and Apple App Store for this vulnerability—with astonishing results. Reportedly, the researcher, named Harry, found that 103 out of 200 iOS apps they scanned had this issue, collectively exposing tens of millions of stored files. 

To draw attention to the issue, Harry set up a website where users can see the apps affected by the issue. Codeway’s apps are no longer listed there, as Harry removes entries once developers confirm they have fixed the problem. Codeway reportedly resolved the issue across all of its apps within hours of responsible disclosure.

How to stay safe

Besides checking if any apps you use appear in Harry’s Firehound registry, there are a few ways to better protect your privacy when using AI chatbots.

  • Use private chatbots that don’t use your data to train the model.
  • Don’t rely on chatbots for important life decisions. They have no experience or empathy.
  • Don’t use your real identity when discussing sensitive subjects.
  • Keep shared information impersonal. Don’t use real names and don’t upload personal documents.
  • Don’t share your conversations unless you absolutely have to. In some cases, it makes them searchable.
  • If you’re using an AI that is developed by a social media company (Meta AI, Llama, Grok, Bard, Gemini, and so on), make sure you’re not logged in to that social media platform. Your conversations could be linked to your social media account, which might contain a lot of personal information.

Always remember that the developments in AI are going too fast for security and privacy to be baked into technology. And that even the best AIs still hallucinate.


We don’t just report on privacy—we offer you the option to use it.

Privacy risks should never spread beyond a headline. Keep your online privacy yours by using Malwarebytes Privacy VPN.

  •  

AI chat app leak exposes 300 million messages tied to 25 million users

An independent security researcher uncovered a major data breach affecting Chat & Ask AI, one of the most popular AI chat apps on Google Play and Apple App Store, with more than 50 million users.

The researcher claims to have accessed 300 million messages from over 25 million users due to an exposed database. These messages reportedly included, among other things, discussions of illegal activities and requests for suicide assistance.

Behind the scenes, Chat & Ask AI is a “wrapper” app that plugs into various large language models (LLMs) from other companies, including OpenAI’s ChatGPT, Anthropic’s Claude, and Google’s Gemini. Users can choose which model they want to interact with.

The exposed data included user files containing their entire chat history, the models used, and other settings. But it also revealed data belonging to users of other apps developed by Codeway—the developer of Chat & Ask AI.

The vulnerability behind this data breach is a well-known and documented Firebase misconfiguration. Firebase is a cloud-based backend-as-a-service (BaaS) platform provided by Google that helps developers build, manage, and scale mobile and web applications.

Security researchers often refer to a set of preventable errors in how developers set up Google Firebase services, which leave backend data, databases, and storage buckets accessible to the public without authentication.

One of the most common Firebase misconfigurations is leaving Security Rules set to public. This allows anyone with the project URL to read, modify, or delete data without authentication.

This prompted the researcher to create a tool that automatically scans apps on Google Play and Apple App Store for this vulnerability—with astonishing results. Reportedly, the researcher, named Harry, found that 103 out of 200 iOS apps they scanned had this issue, collectively exposing tens of millions of stored files. 

To draw attention to the issue, Harry set up a website where users can see the apps affected by the issue. Codeway’s apps are no longer listed there, as Harry removes entries once developers confirm they have fixed the problem. Codeway reportedly resolved the issue across all of its apps within hours of responsible disclosure.

How to stay safe

Besides checking if any apps you use appear in Harry’s Firehound registry, there are a few ways to better protect your privacy when using AI chatbots.

  • Use private chatbots that don’t use your data to train the model.
  • Don’t rely on chatbots for important life decisions. They have no experience or empathy.
  • Don’t use your real identity when discussing sensitive subjects.
  • Keep shared information impersonal. Don’t use real names and don’t upload personal documents.
  • Don’t share your conversations unless you absolutely have to. In some cases, it makes them searchable.
  • If you’re using an AI that is developed by a social media company (Meta AI, Llama, Grok, Bard, Gemini, and so on), make sure you’re not logged in to that social media platform. Your conversations could be linked to your social media account, which might contain a lot of personal information.

Always remember that the developments in AI are going too fast for security and privacy to be baked into technology. And that even the best AIs still hallucinate.


We don’t just report on privacy—we offer you the option to use it.

Privacy risks should never spread beyond a headline. Keep your online privacy yours by using Malwarebytes Privacy VPN.

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AT&T breach data resurfaces with new risks for customers

When data resurfaces, it never comes back weaker. A newly shared dataset tied to AT&T shows just how much more dangerous an “old” breach can become once criminals have enough of the right details to work with.

The dataset, privately circulated since February 2, 2026, is described as AT&T customer data likely gathered over the years. It doesn’t just contain a few scraps of contact information. It reportedly includes roughly 176 million records, with…

  • Up to 148 million Social Security numbers (full SSNs and last four digits)
  • More than 133 million full names and street addresses
  • More than 132 million phone numbers.
  • Dates of birth for around 75 million people
  • More than 131 million email addresses

Taken together, that’s the kind of rich, structured data set that makes a criminal’s life much easier.

On their own, any one of these data points would be inconvenient but manageable. An email address fuels spam and basic phishing. A phone number enables smishing and robocalls. An address helps attackers guess which services you might use. But when attackers can look up a single person and see name, full address, phone, email, complete or partial SSN, and date of birth in one place, the risk shifts from “annoying” to high‑impact.

That combination is exactly what many financial institutions and mobile carriers still rely on for identity checks. For cybercriminals, this sort of dataset is a Swiss Army knife.

It can be used to craft convincing AT&T‑themed phishing emails and texts, complete with correct names and partial SSNs to “prove” legitimacy. It can power large‑scale SIM‑swap attempts and account takeovers, where criminals call carriers and banks pretending to be you, armed with the answers those call centers expect to hear. It can also enable long‑term identity theft, with SSNs and dates of birth abused to open new lines of credit or file fraudulent tax returns.

The uncomfortable part is that a fresh hack isn’t always required to end up here. Breach data tends to linger, then get merged, cleaned up, and expanded over time. What’s different in this case is the breadth and quality of the profiles. They include more email addresses, more SSNs, more complete records per person. That makes the data more attractive, more searchable, and more actionable for criminals.

For potential victims, the lesson is simple but important. If you have ever been an AT&T customer, treat this as a reminder that your data may already be circulating in a form that is genuinely useful to attackers. Be cautious of any AT&T‑related email or text, enable multi‑factor authentication wherever possible, lock down your mobile account with extra passcodes, and consider monitoring your credit. You can’t pull your data back out of a criminal dataset—but you can make sure it’s much harder to use against you.

What to do when your data is involved in a breach

If you think you have been affected by a data breach, here are steps you can take to protect yourself:

  • Check the company’s advice. Every breach is different, so check with the company to find out what’s happened and follow any specific advice it offers.
  • Change your password. You can make a stolen password useless to thieves by changing it. Choose a strong password that you don’t use for anything else. Better yet, let a password manager choose one for you.
  • Enable two-factor authentication (2FA). If you can, use a FIDO2-compliant hardware key, laptop, or phone as your second factor. Some forms of 2FA can be phished just as easily as a password, but 2FA that relies on a FIDO2 device can’t be phished.
  • Watch out for impersonators. The thieves may contact you posing as the breached platform. Check the official website to see if it’s contacting victims and verify the identity of anyone who contacts you using a different communication channel.
  • Take your time. Phishing attacks often impersonate people or brands you know, and use themes that require urgent attention, such as missed deliveries, account suspensions, and security alerts.
  • Consider not storing your card details. It’s definitely more convenient to let sites remember your card details, but it increases risk if a retailer suffers a breach.
  • Set up identity monitoring, which alerts you if your personal information is found being traded illegally online and helps you recover after.

Use Malwarebytes’ free Digital Footprint scan to see whether your personal information has been exposed online.


We don’t just report on threats—we help safeguard your entire digital identity

Cybersecurity risks should never spread beyond a headline. Protect your, and your family’s, personal information by using identity protection.

  •  

AT&T breach data resurfaces with new risks for customers

When data resurfaces, it never comes back weaker. A newly shared dataset tied to AT&T shows just how much more dangerous an “old” breach can become once criminals have enough of the right details to work with.

The dataset, privately circulated since February 2, 2026, is described as AT&T customer data likely gathered over the years. It doesn’t just contain a few scraps of contact information. It reportedly includes roughly 176 million records, with…

  • Up to 148 million Social Security numbers (full SSNs and last four digits)
  • More than 133 million full names and street addresses
  • More than 132 million phone numbers.
  • Dates of birth for around 75 million people
  • More than 131 million email addresses

Taken together, that’s the kind of rich, structured data set that makes a criminal’s life much easier.

On their own, any one of these data points would be inconvenient but manageable. An email address fuels spam and basic phishing. A phone number enables smishing and robocalls. An address helps attackers guess which services you might use. But when attackers can look up a single person and see name, full address, phone, email, complete or partial SSN, and date of birth in one place, the risk shifts from “annoying” to high‑impact.

That combination is exactly what many financial institutions and mobile carriers still rely on for identity checks. For cybercriminals, this sort of dataset is a Swiss Army knife.

It can be used to craft convincing AT&T‑themed phishing emails and texts, complete with correct names and partial SSNs to “prove” legitimacy. It can power large‑scale SIM‑swap attempts and account takeovers, where criminals call carriers and banks pretending to be you, armed with the answers those call centers expect to hear. It can also enable long‑term identity theft, with SSNs and dates of birth abused to open new lines of credit or file fraudulent tax returns.

The uncomfortable part is that a fresh hack isn’t always required to end up here. Breach data tends to linger, then get merged, cleaned up, and expanded over time. What’s different in this case is the breadth and quality of the profiles. They include more email addresses, more SSNs, more complete records per person. That makes the data more attractive, more searchable, and more actionable for criminals.

For potential victims, the lesson is simple but important. If you have ever been an AT&T customer, treat this as a reminder that your data may already be circulating in a form that is genuinely useful to attackers. Be cautious of any AT&T‑related email or text, enable multi‑factor authentication wherever possible, lock down your mobile account with extra passcodes, and consider monitoring your credit. You can’t pull your data back out of a criminal dataset—but you can make sure it’s much harder to use against you.

What to do when your data is involved in a breach

If you think you have been affected by a data breach, here are steps you can take to protect yourself:

  • Check the company’s advice. Every breach is different, so check with the company to find out what’s happened and follow any specific advice it offers.
  • Change your password. You can make a stolen password useless to thieves by changing it. Choose a strong password that you don’t use for anything else. Better yet, let a password manager choose one for you.
  • Enable two-factor authentication (2FA). If you can, use a FIDO2-compliant hardware key, laptop, or phone as your second factor. Some forms of 2FA can be phished just as easily as a password, but 2FA that relies on a FIDO2 device can’t be phished.
  • Watch out for impersonators. The thieves may contact you posing as the breached platform. Check the official website to see if it’s contacting victims and verify the identity of anyone who contacts you using a different communication channel.
  • Take your time. Phishing attacks often impersonate people or brands you know, and use themes that require urgent attention, such as missed deliveries, account suspensions, and security alerts.
  • Consider not storing your card details. It’s definitely more convenient to let sites remember your card details, but it increases risk if a retailer suffers a breach.
  • Set up identity monitoring, which alerts you if your personal information is found being traded illegally online and helps you recover after.

Use Malwarebytes’ free Digital Footprint scan to see whether your personal information has been exposed online.


We don’t just report on threats—we help safeguard your entire digital identity

Cybersecurity risks should never spread beyond a headline. Protect your, and your family’s, personal information by using identity protection.

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Please Don’t Feed the Scattered Lapsus ShinyHunters

A prolific data ransom gang that calls itself Scattered Lapsus ShinyHunters (SLSH) has a distinctive playbook when it seeks to extort payment from victim firms: Harassing, threatening and even swatting executives and their families, all while notifying journalists and regulators about the extent of the intrusion. Some victims reportedly are paying — perhaps as much to contain the stolen data as to stop the escalating personal attacks. But a top SLSH expert warns that engaging at all beyond a “We’re not paying” response only encourages further harassment, noting that the group’s fractious and unreliable history means the only winning move is not to pay.

Image: Shutterstock.com, @Mungujakisa

Unlike traditional, highly regimented Russia-based ransomware affiliate groups, SLSH is an unruly and somewhat fluid English-language extortion gang that appears uninterested in building a reputation of consistent behavior whereby victims might have some measure of confidence that the criminals will keep their word if paid.

That’s according to Allison Nixon, director of research at the New York City based security consultancy Unit 221B. Nixon has been closely tracking the criminal group and individual members as they bounce between various Telegram channels used to extort and harass victims, and she said SLSH differs from traditional data ransom groups in other important ways that argue against trusting them to do anything they say they’ll do — such as destroying stolen data.

Like SLSH, many traditional Russian ransomware groups have employed high-pressure tactics to force payment in exchange for a decryption key and/or a promise to delete stolen data, such as publishing a dark web shaming blog with samples of stolen data next to a countdown clock, or notifying journalists and board members of the victim company. But Nixon said the extortion from SLSH quickly escalates way beyond that — to threats of physical violence against executives and their families, DDoS attacks on the victim’s website, and repeated email-flooding campaigns.

SLSH is known for breaking into companies by phishing employees over the phone, and using the purloined access to steal sensitive internal data. In a January 30 blog post, Google’s security forensics firm Mandiant said SLSH’s most recent extortion attacks stem from incidents spanning early to mid-January 2026, when SLSH members pretended to be IT staff and called employees at targeted victim organizations claiming that the company was updating MFA settings.

“The threat actor directed the employees to victim-branded credential harvesting sites to capture their SSO credentials and MFA codes, and then registered their own device for MFA,” the blog post explained.

Victims often first learn of the breach when their brand name is uttered on whatever ephemeral new public Telegram group chat SLSH is using to threaten, extort and harass their prey. According to Nixon, the coordinated harassment on the SLSH Telegram channels is part of a well-orchestrated strategy to overwhelm the victim organization by manufacturing humiliation that pushes them over the threshold to pay.

Nixon said multiple executives at targeted organizations have been subject to “swatting” attacks, wherein SLSH communicated a phony bomb threat or hostage situation at the target’s address in the hopes of eliciting a heavily armed police response at their home or place of work.

“A big part of what they’re doing to victims is the psychological aspect of it, like harassing executives’ kids and threatening the board of the company,” Nixon told KrebsOnSecurity. “And while these victims are getting extortion demands, they’re simultaneously getting outreach from media outlets saying, ‘Hey, do you have any comments on the bad things we’re going to write about you.”

In a blog post today, Unit 221B argues that no one should negotiate with SLSH because the group has demonstrated a willingness to extort victims based on promises that it has no intention to keep. Nixon points out that all of SLSH’s known members hail from The Com, shorthand for a constellation of cybercrime-focused Discord and Telegram communities which serve as a kind of distributed social network that facilitates instant collaboration.

Nixon said Com-based extortion groups tend to instigate feuds and drama between group members, leading to lying, betrayals, credibility destroying behavior, backstabbing, and sabotaging each other.

“With this type of ongoing dysfunction, often compounding by substance abuse, these threat actors often aren’t able to act with the core goal in mind of completing a successful, strategic ransom operation,” Nixon wrote. “They continually lose control with outbursts that put their strategy and operational security at risk, which severely limits their ability to build a professional, scalable, and sophisticated criminal organization network for continued successful ransoms – unlike other, more tenured and professional criminal organizations focused on ransomware alone.”

Intrusions from established ransomware groups typically center around encryption/decryption malware that mostly stays on the affected machine. In contrast, Nixon said, ransom from a Com group is often structured the same as violent sextortion schemes against minors, wherein members of The Com will steal damaging information, threaten to release it, and “promise” to delete it if the victim complies without any guarantee or technical proof point that they will keep their word. She writes:

A key component of SLSH’s efforts to convince victims to pay, Nixon said, involves manipulating the media into hyping the threat posed by this group. This approach also borrows a page from the playbook of sextortion attacks, she said, which encourages predators to keep targets continuously engaged and worrying about the consequences of non-compliance.

“On days where SLSH had no substantial criminal ‘win’ to announce, they focused on announcing death threats and harassment to keep law enforcement, journalists, and cybercrime industry professionals focused on this group,” she said.

An excerpt from a sextortion tutorial from a Com-based Telegram channel. Image: Unit 221B.

Nixon knows a thing or two about being threatened by SLSH: For the past several months, the group’s Telegram channels have been replete with threats of physical violence against her, against Yours Truly, and against other security researchers. These threats, she said, are just another way the group seeks to generate media attention and achieve a veneer of credibility, but they are useful as indicators of compromise because SLSH members tend to name drop and malign security researchers even in their communications with victims.

“Watch for the following behaviors in their communications to you or their public statements,” Unit 221B’s advisory reads. “Repeated abusive mentions of Allison Nixon (or “A.N”), Unit 221B, or cybersecurity journalists—especially Brian Krebs—or any other cybersecurity employee, or cybersecurity company. Any threats to kill, or commit terrorism, or violence against internal employees, cybersecurity employees, investigators, and journalists.”

Unit 221B says that while the pressure campaign during an extortion attempt may be traumatizing to employees, executives, and their family members, entering into drawn-out negotiations with SLSH incentivizes the group to increase the level of harm and risk, which could include the physical safety of employees and their families.

“The breached data will never go back to the way it was, but we can assure you that the harassment will end,” Nixon said. “So, your decision to pay should be a separate issue from the harassment. We believe that when you separate these issues, you will objectively see that the best course of action to protect your interests, in both the short and long term, is to refuse payment.”

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Match, Hinge, OkCupid, and Panera Bread breached by ransomware group

The ShinyHunters ransomware group has claimed the theft of data containing 10 million records belonging to the Match Group and 14 million records from bakery-café chain Panera Bread.

Claims posted by ShinyHunters
Claims posted by ShinyHunters

The Match Group, that runs multiple popular online dating services like Tinder, Match.com, Meetic, OkCupid, and Hinge has confirmed a cyber incident and is investigating the data breach.

Panera Bread also confirmed that an incident occurred and has alerted authorities. “The data involved is contact information,” it said in an emailed statement to Reuters.

ShinyHunters seems to be gaining access through Single-Sign-On (SSO) platforms and using voice-cloning techniques, which has resulted in a growing number of breaches across different companies. However, not all of these breaches have the same impact.

The impact

For the Match Group, ShinyHunters claims:

“Over 10 million records of Hinge, Match, and OkCupid usage data from Appsflyer and hundreds of internal documents.”

Match says there is no evidence that logins, financial data, or private chats were stolen, but Personally Identifiable Information (PII) and tracking data for some users are in scope. A notification process has been set in motion.

For Panera Bread, ShinyHunters claims to have compromised 14 million records containing PII.

Panera Bread reassures users that there is no indication that the hackers accessed user login credentials, financial information, or private communications.

ShinyHunters also breached Bumblr, Carmax, and Edmunds among others, but I wanted to use Panera Bread and the Match Group as two examples that have very different consequences for users.

When your activity on a dating app is compromised, the impact can be deeply personal. Concerns can range from partners, family members, or employers discovering dating profiles to the risk of doxxing. For many people, stigma around certain apps can lead to fears of being outed, accused of infidelity, or even extorted.

The impact of the Panera Bread breach will be very different. “I just ordered a sandwich and now some criminals have my home address?” Data like this is useful to enrich existing data sets. And the more they know, the easier and better they can target you in phishing attempts.

Protecting yourself after a data breach

If you think you have been affected by a data breach, here are steps you can take to protect yourself:

  • Check the company’s advice. Every breach is different, so check with the company to find out what’s happened and follow any specific advice it offers.
  • Change your password. You can make a stolen password useless to thieves by changing it. Choose a strong password that you don’t use for anything else. Better yet, let a password manager choose one for you.
  • Enable two-factor authentication (2FA). If you can, use a FIDO2-compliant hardware key, laptop, or phone as your second factor. Some forms of 2FA can be phished just as easily as a password, but 2FA that relies on a FIDO2 device can’t be phished.
  • Watch out for impersonators. The thieves may contact you posing as the breached platform. Check the official website to see if it’s contacting victims and verify the identity of anyone who contacts you using a different communication channel.
  • Take your time. Phishing attacks often impersonate people or brands you know, and use themes that require urgent attention, such as missed deliveries, account suspensions, and security alerts.
  • Consider not storing your card details. It’s definitely more convenient to let sites remember your card details, but it increases risk if a retailer suffers a breach.
  • Set up identity monitoring, which alerts you if your personal information is found being traded illegally online and helps you recover after.

You can use Malwarebytes’ free Digital Footprint scan to find out if your private information is exposed online.


We don’t just report on threats—we help safeguard your entire digital identity

Cybersecurity risks should never spread beyond a headline. Protect your, and your family’s, personal information by using identity protection.

  •  

Match, Hinge, OkCupid, and Panera Bread breached by ransomware group

The ShinyHunters ransomware group has claimed the theft of data containing 10 million records belonging to the Match Group and 14 million records from bakery-café chain Panera Bread.

Claims posted by ShinyHunters
Claims posted by ShinyHunters

The Match Group, that runs multiple popular online dating services like Tinder, Match.com, Meetic, OkCupid, and Hinge has confirmed a cyber incident and is investigating the data breach.

Panera Bread also confirmed that an incident occurred and has alerted authorities. “The data involved is contact information,” it said in an emailed statement to Reuters.

ShinyHunters seems to be gaining access through Single-Sign-On (SSO) platforms and using voice-cloning techniques, which has resulted in a growing number of breaches across different companies. However, not all of these breaches have the same impact.

The impact

For the Match Group, ShinyHunters claims:

“Over 10 million records of Hinge, Match, and OkCupid usage data from Appsflyer and hundreds of internal documents.”

Match says there is no evidence that logins, financial data, or private chats were stolen, but Personally Identifiable Information (PII) and tracking data for some users are in scope. A notification process has been set in motion.

For Panera Bread, ShinyHunters claims to have compromised 14 million records containing PII.

Panera Bread reassures users that there is no indication that the hackers accessed user login credentials, financial information, or private communications.

ShinyHunters also breached Bumblr, Carmax, and Edmunds among others, but I wanted to use Panera Bread and the Match Group as two examples that have very different consequences for users.

When your activity on a dating app is compromised, the impact can be deeply personal. Concerns can range from partners, family members, or employers discovering dating profiles to the risk of doxxing. For many people, stigma around certain apps can lead to fears of being outed, accused of infidelity, or even extorted.

The impact of the Panera Bread breach will be very different. “I just ordered a sandwich and now some criminals have my home address?” Data like this is useful to enrich existing data sets. And the more they know, the easier and better they can target you in phishing attempts.

Protecting yourself after a data breach

If you think you have been affected by a data breach, here are steps you can take to protect yourself:

  • Check the company’s advice. Every breach is different, so check with the company to find out what’s happened and follow any specific advice it offers.
  • Change your password. You can make a stolen password useless to thieves by changing it. Choose a strong password that you don’t use for anything else. Better yet, let a password manager choose one for you.
  • Enable two-factor authentication (2FA). If you can, use a FIDO2-compliant hardware key, laptop, or phone as your second factor. Some forms of 2FA can be phished just as easily as a password, but 2FA that relies on a FIDO2 device can’t be phished.
  • Watch out for impersonators. The thieves may contact you posing as the breached platform. Check the official website to see if it’s contacting victims and verify the identity of anyone who contacts you using a different communication channel.
  • Take your time. Phishing attacks often impersonate people or brands you know, and use themes that require urgent attention, such as missed deliveries, account suspensions, and security alerts.
  • Consider not storing your card details. It’s definitely more convenient to let sites remember your card details, but it increases risk if a retailer suffers a breach.
  • Set up identity monitoring, which alerts you if your personal information is found being traded illegally online and helps you recover after.

You can use Malwarebytes’ free Digital Footprint scan to find out if your private information is exposed online.


We don’t just report on threats—we help safeguard your entire digital identity

Cybersecurity risks should never spread beyond a headline. Protect your, and your family’s, personal information by using identity protection.

  •  

Under Armour ransomware breach: data of 72 million customers appears on the dark web

When reports first emerged in November 2025 that sportswear giant Under Armour had been hit by the Everest ransomware group, the story sounded depressingly familiar: a big brand, a huge trove of data, and a lot of unanswered questions. Since then, the narrative around what actually happened has split into two competing versions—cautious corporate statements on one side and mounting evidence on the other that strongly suggests a large customer dataset is now circulating online.

Public communications and legal language talk about ongoing investigations, limited confirmation, and careful wording around “potential” impact. For many customers, that creates the impression that details are still emerging and that it’s unclear how serious the incident is. Meanwhile, a class action lawsuit filed in the US alleges negligence in data protection and references large‑scale exfiltration of sensitive information, including customer—and possibly employee—data during a November 2025 ransomware attack. Those lawsuits are, by definition, allegations, but they add weight to the idea that this is not a minor incident.

The Everest ransomware group claimed responsibility for the breach after Under Armour allegedly “failed to respond by the deadline.”

Everest Group leak site
Everest Group leak site

From the cybercriminals’ perspective, that means negotiations are over and the data has been published.

The Everest leak site also states that:

“After the full publication, all the data was duplicated across various hacker forums and leak database sites.”

Which seems to be confirmed by posts like this one, where the poster claims the data set contains full names, email addresses, phone numbers, physical locations, genders, purchase histories, and preferences. The data set contains 191,577,365 records including 72,727,245 unique email addresses.

Data made available on the Dark Web

So where does that leave Under Armour customers? The cautious corporate framing and the aggressive cybercriminal claims can’t both be entirely accurate, but they do not carry equal weight when it comes to assessing real-world risk. Ransomware groups sometimes lie about their access, but spinning up a major leak entry, publishing sample data, and distributing it across underground forums is a lot of work for a bluff that could be quickly disproven by affected users. Combined with the “Database Leaked” status on the Everest site, the balance of probabilities suggests that a substantial customer database is now in the wild, even if not every detail in the attackers’ claims is accurate.

Protecting yourself after a data breach

If you think you have been affected by a data breach, here are steps you can take to protect yourself:

  • Check the company’s advice. Every breach is different, so check with the company to find out what’s happened and follow any specific advice it offers.
  • Change your password. You can make a stolen password useless to thieves by changing it. Choose a strong password that you don’t use for anything else. Better yet, let a password manager choose one for you.
  • Enable two-factor authentication (2FA). If you can, use a FIDO2-compliant hardware key, laptop, or phone as your second factor. Some forms of 2FA can be phished just as easily as a password, but 2FA that relies on a FIDO2 device can’t be phished.
  • Watch out for impersonators. The thieves may contact you posing as the breached platform. Check the official website to see if it’s contacting victims and verify the identity of anyone who contacts you using a different communication channel.
  • Take your time. Phishing attacks often impersonate people or brands you know, and use themes that require urgent attention, such as missed deliveries, account suspensions, and security alerts.
  • Consider not storing your card details. It’s definitely more convenient to let sites remember your card details, but but it increases risk if a retailer suffers a breach.
  • Set up identity monitoring, which alerts you if your personal information is found being traded illegally online and helps you recover after.

We don’t just report on threats—we help safeguard your entire digital identity

Cybersecurity risks should never spread beyond a headline. Protect your, and your family’s, personal information by using identity protection.

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Under Armour ransomware breach: data of 72 million customers appears on the dark web

When reports first emerged in November 2025 that sportswear giant Under Armour had been hit by the Everest ransomware group, the story sounded depressingly familiar: a big brand, a huge trove of data, and a lot of unanswered questions. Since then, the narrative around what actually happened has split into two competing versions—cautious corporate statements on one side and mounting evidence on the other that strongly suggests a large customer dataset is now circulating online.

Public communications and legal language talk about ongoing investigations, limited confirmation, and careful wording around “potential” impact. For many customers, that creates the impression that details are still emerging and that it’s unclear how serious the incident is. Meanwhile, a class action lawsuit filed in the US alleges negligence in data protection and references large‑scale exfiltration of sensitive information, including customer—and possibly employee—data during a November 2025 ransomware attack. Those lawsuits are, by definition, allegations, but they add weight to the idea that this is not a minor incident.

The Everest ransomware group claimed responsibility for the breach after Under Armour allegedly “failed to respond by the deadline.”

Everest Group leak site
Everest Group leak site

From the cybercriminals’ perspective, that means negotiations are over and the data has been published.

The Everest leak site also states that:

“After the full publication, all the data was duplicated across various hacker forums and leak database sites.”

Which seems to be confirmed by posts like this one, where the poster claims the data set contains full names, email addresses, phone numbers, physical locations, genders, purchase histories, and preferences. The data set contains 191,577,365 records including 72,727,245 unique email addresses.

Data made available on the Dark Web

So where does that leave Under Armour customers? The cautious corporate framing and the aggressive cybercriminal claims can’t both be entirely accurate, but they do not carry equal weight when it comes to assessing real-world risk. Ransomware groups sometimes lie about their access, but spinning up a major leak entry, publishing sample data, and distributing it across underground forums is a lot of work for a bluff that could be quickly disproven by affected users. Combined with the “Database Leaked” status on the Everest site, the balance of probabilities suggests that a substantial customer database is now in the wild, even if not every detail in the attackers’ claims is accurate.

Protecting yourself after a data breach

If you think you have been affected by a data breach, here are steps you can take to protect yourself:

  • Check the company’s advice. Every breach is different, so check with the company to find out what’s happened and follow any specific advice it offers.
  • Change your password. You can make a stolen password useless to thieves by changing it. Choose a strong password that you don’t use for anything else. Better yet, let a password manager choose one for you.
  • Enable two-factor authentication (2FA). If you can, use a FIDO2-compliant hardware key, laptop, or phone as your second factor. Some forms of 2FA can be phished just as easily as a password, but 2FA that relies on a FIDO2 device can’t be phished.
  • Watch out for impersonators. The thieves may contact you posing as the breached platform. Check the official website to see if it’s contacting victims and verify the identity of anyone who contacts you using a different communication channel.
  • Take your time. Phishing attacks often impersonate people or brands you know, and use themes that require urgent attention, such as missed deliveries, account suspensions, and security alerts.
  • Consider not storing your card details. It’s definitely more convenient to let sites remember your card details, but but it increases risk if a retailer suffers a breach.
  • Set up identity monitoring, which alerts you if your personal information is found being traded illegally online and helps you recover after.

We don’t just report on threats—we help safeguard your entire digital identity

Cybersecurity risks should never spread beyond a headline. Protect your, and your family’s, personal information by using identity protection.

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