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What’s your data worth on the dark web? (Lock and Code S07E15)

27 July 2026 at 16:35

This week on the Lock and Code podcast…

Twenty years ago, a British mathematician named Clive Humby popularized a phrase that came to describe data’s relationship with the entire global economy: “Data is the new oil.”

Pithy as the phrase sounds, it is undeniably true.

Data steers decisions at businesses of every size. Data created entirely new industries built around its capture. And, for a select number of companies, data has produced billions—if not trillions—of dollars in value.

So how is it that, on the dark web, your stolen identity can be purchased for just 95 cents?

That’s what a Malwarebytes researcher found last month after spending 48 hours inside the dark web to investigate cybercrime. Across a variety of forums and directories, he found subscription plans for malware that steals information once implanted on a device. He found guides for deploying social engineering scams. He found people selling their services to build fake websites that trick people into handing over their usernames and passwords. And he found one of the dark web’s most traded commodities—personal data, packaged together about individual people, to help a cybercriminal commit identity fraud.

These packages are called “fullz.” For victims in the United States, a fullz contains a full name, Social Security Number, date of birth, address, and other personal details. That is enough, on its own, for a cybercriminal to potentially open a bogus line of credit, file a fake tax return, access financial accounts, or obtain medical services under someone else’s name.

As we wrote on Malwarebytes Labs:

“For less than the cost of a cup of coffee, a cybercriminal can buy enough information to devastate someone’s financial life.”

It’s the kind of risk that could scare anyone, especially considering the scale behind it. In just the first six months of 2026, Malwarebytes found more than 7,500 compromised data sets on the dark web containing more than 8.4 billion records.

And yet, even today, cybersecurity professionals still get asked why anyone should bother protecting their data.

The public, understandably, are exhausted. With data breaches happening every week—if not every day—cybersecurity can start to feel pointless. With young people unable to build financial security, they start believing that they have nothing worth stealing. And with Big Tech already collecting our every movement, behavior, click, and concern, people understandably feel powerless to fight any kind of data abuse, be it corporate or criminal.

So today’s episode approaches the question from a different direction. This isn’t about why you should protect yourself—plenty of company websites will tell you that, and most of them rely on fear. This is about why hackers want your data in the first place.

Today, on the Lock and Code podcast, host David Ruiz explains how cybercriminals turn a single repeated password into account takeover, how a screenshot of your house from Google Maps became a tool in extortion emails, and why the most benign information about you—an address, an age, one public photo—is often the most useful data a stranger can buy.

Tune in today to listen to the full episode.

Show notes and credits:

Intro Music: “Spellbound” by Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 4.0 License
http://creativecommons.org/licenses/by/4.0/
Outro Music: “Good God” by Wowa (unminus.com)


Listen up—Malwarebytes doesn’t just talk cybersecurity, we provide it.

Protect yourself from online attacks that threaten your identity, your files, your system, and your financial well-being with our exclusive offer for Malwarebytes Premium for Lock and Code listeners.

Cardiac patients’ medical data stolen and held to ransom

16 June 2026 at 14:49

Cardiac monitoring provider iRhythm has been hit by a data theft followed by an extortion attempt.

In a filing with the Securities and Exchange Commission (SEC), iRhythm revealed it was contacted by someone on June 9 who claimed to have stolen sensitive information, including proprietary data, patient PHI, and other personal information. That person demanded payment in exchange for not publishing the data.

iRhythm provides ambulatory cardiac monitoring and analysis (for example using the Zio patch) and has reportedly processed over two billion hours of heartbeat data from more than twelve million patients.

In the filing, the company said the data was obtained through social engineering and is from “certain third-party-hosted business applications”, without revealing any further details about the amount of data.

On its own website, iRhythm also doesn’t disclose much about the nature of the stolen data, but does seem to imply no financial data was affected:

“We have not identified any impact to our products, our clinical or medical device systems, our connections to customers, our manufacturing and distribution operations, patient safety, or our ability to meet patient needs. In addition, we do not store or retain individual financial account information or payment card information. 

 As we actively investigate, we will notify individuals affected by this incident in accordance with applicable law and take steps as needed to protect and remediate the impact to them.“

However, the SEC filing adds that iRhythm determined that the incident is significant, “in light of the volume of the potentially affected data.” Together with the extortionist’s claims that they have patients’ medical data, that makes the breach one worth noting if you have used iRhythm’s services.

Even without payment data, healthcare breaches have serious downstream effects:

  • Attackers can craft highly convincing emails, texts, or calls that reference specific procedures or monitoring episodes (for example, “about your recent Zio patch recording”) to trick patients into sharing more data or paying fake bills.
  • The breached data can be used to create a fake identity, insurance fraud, or medical identity theft.
  • Exposure of cardiac and other health‑related information can be deeply sensitive and may have employment/insurance ramifications, especially if data is posted publicly or sold to data brokers.

Healthcare breach data tends to circulate for years, and victims may face sporadic fraud and phishing attempts long after the headlines fade.

How to stay safe

If you’ve used iRhythm’s services, keep an eye on your post, email, and patient portals for official breach notifications from iRhythm or your healthcare provider.

In the US, breaches of protected health information that meet certain criteria must be reported to patients and regulators. iRhythm has promised to “notify individuals affected by this incident in accordance with applicable law and take steps as needed to protect and remediate the impact to them.”

To stay out of the hands of phishers and scammers:

  • When you receive a communication about the data breach, verify through other channels that it really came from iRhythm. Go directly to iRhythm’s official website or patient portal, or call a known phone number to confirm the communication is genuine.
  • Be extra suspicious of emails or texts that claim to offer compensation, refunds, or other financial consequences related to this incident.
  • Change passwords for your iRhythm‑linked portals and your cardiology or hospital patient portals, especially if you reused those passwords elsewhere.
  • Log into your health insurer’s portal and check claims on a regular basis.
  • If you see anything suspicious, report it immediately to your insurer and provider and ask them to flag your account for possible identity theft.
  • Do not provide personal or financial information over the phone just because the caller knows details about you which they may have obtained from the stolen data.

Let’s face it, an incognito window can only do so much. 
 
Breaches, dark web trading, credit fraud. Malwarebytes Identity Theft Protection monitors for all of it, alerts you fast, and comes with identity theft insurance. 

Fast16 Malware

30 April 2026 at 12:22

Researchers have reverse-engineered a piece of malware named Fast16. It’s almost certainly state-sponsored, probably US in origin, and was deployed against Iran years before Stuxnet:

“…the Fast16 malware was designed to carry out the most subtle form of sabotage ever seen in an in-the-wild malware tool: By automatically spreading across networks and then silently manipulating computation processes in certain software applications that perform high-precision mathematical calculations and simulate physical phenomena, Fast16 can alter the results of those programs to cause failures that range from faulty research results to catastrophic damage to real-world equipment.”

Another news article.

Lots of interesting details at the links.

Cyber Insights 2026: Social Engineering

16 January 2026 at 13:30

We've known that social engineering would get AI wings. Now, at the beginning of 2026, we are learning just how high those wings can soar.

The post Cyber Insights 2026: Social Engineering appeared first on SecurityWeek.

Malware Analysis, Threat Intelligence and Reverse Engineering: workshop slides

By: Bart
8 February 2018 at 21:31

Last month I gave a workshop for a group of 20-25 enthusiastic women, all either starting in infosec, or with an interest to start in this field.

For that purpose, I had created a full workshop: slides or a presentation introducing the concepts of Malware Analysis, Threat Intelligence and Reverse Engineering.

The idea was to convey these topics in a clear and approachable manner, both theory and in practice; for the latter, I had set up a custom VM, with Labs, including my own created applications, some with simple obfuscation.

All participants were very enthusiastic, and I hope to have sparkled most, if not some of them to pursue a career in this field. For this exact same reason, I am now releasing the presentation to the public - the VM and recordings however will not be published, as I created these solely for CWF.

You may however download the LAB material from Github below:
https://github.com/bartblaze/MaTiRe

Without any further ado, you may find the slides below, on SlideShare:


Any feedback is always appreciated.

I would also like to thank Nathalie for putting me in touch with Rosanna, the organiser of the CyberWayFinder program. And of course, my gratitude to all the attendees for making it!

Mind the disclaimer for the slides. License: CC Attribution-NonCommercial-NoDerivs License
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