WhatsApp is going through a rough patch. Some users would argue it has been ever since Meta acquired the once widely trusted messaging platform. User sentiment has shifted from “trusted default messenger” to a grudgingly necessary Meta product.

Privacy-aware users still see WhatsApp as one of the more secure mass-market messaging platforms if you lock down its settings. Even then, many remain uneasy about Meta’s broader ecosystem, and wish all their contacts would switch to a more secure platform.

Back to current affairs, which will only reinforce that sentiment.

Google’s Project Zero has just disclosed a WhatsApp vulnerability where a malicious media file, sent into a newly created group chat, can be automatically downloaded and used as an attack vector.

The bug affects WhatsApp on Android and involves zero‑click media downloads in group chats. You can be attacked simply by being added to a group and having a malicious file sent to you.

According to Project Zero, the attack is most likely to be used in targeted campaigns, since the attacker needs to know or guess at least one contact. While focused, it is relatively easy to repeat once an attacker has a likely target list.

And to put a cherry on top for WhatsApp’s competitors, a potentially even more serious concern for the popular messaging platform, an international group of plaintiffs sued Meta Platforms, alleging the WhatsApp owner can store, analyze, and access virtually all of users’ private communications, despite WhatsApp’s end-to-end encryption claims.

How to secure WhatsApp

Reportedly, Meta pushed a server change on November 11, 2025, but Google says that only partially resolved the issue. So, Meta is working on a comprehensive fix.

Google’s advice is to disable Automatic Download or enable WhatsApp’s Advanced Privacy Mode so that media is not automatically downloaded to your phone.

And you’ll need to keep WhatsApp updated to get the latest patches, which is true for any app and for Android itself.

Turn off auto-download of media

Goal: ensure that no photos, videos, audio, or documents are pulled to the device without an explicit decision.

• Open WhatsApp on your Android device.
• Tap the three‑dot menu in the top‑right corner, then tap Settings.
• Go to Storage and data (sometimes labeled Data and storage usage).
• Under Media auto-download, you will see When using mobile data, when connected on Wi‑Fi. and when roaming.
• For each of these three entries, tap it and uncheck all media types: Photos, Audio, Videos, Documents. Then tap OK.
• Confirm that each category now shows something like “No media” under it.

Doing this directly implements Project Zero’s guidance to “disable Automatic Download” so that malicious media can’t silently land on your storage as soon as you are dropped into a hostile group.

Stop WhatsApp from saving media to your Android gallery

Even if WhatsApp still downloads some content, you can stop it from leaking into shared storage where other apps and system components see it.

• In Settings, go to Chats.
• Turn off Media visibility (or similar option such as Show media in gallery). For particularly sensitive chats, open the chat, tap the contact or group name, find Media visibility, and set it to No for that thread.

WhatsApp is a sandbox, and should contain the threat. Which means, keeping media inside WhatsApp makes it harder for a malicious file to be processed by other, possibly more vulnerable components.

Lock down who can add you to groups

The attack chain requires the attacker to add you and one of your contacts to a new group. Reducing who can do that lowers risk.

• ​In Settings, tap Privacy.
• Tap Groups.
• Change from Everyone to My contacts or ideally My contacts except… and exclude any numbers you do not fully trust.
• If you use WhatsApp for work, consider keeping group membership strictly to known contacts and approved admins.

Set up two-step verification on your WhatsApp account

Read this guide for Android and iOS to learn how to do that.

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We don’t just report on phone security—we provide it

Cybersecurity risks should never spread beyond a headline. Keep threats off your mobile devices by downloading Malwarebytes for iOS, and Malwarebytes for Android today.

WhisperPair is a set of attacks that lets an attacker hijack many popular Bluetooth audio accessories that use Google Fast Pair and, in some cases, even track their location via Google’s Find Hub network—all without requiring any user interaction.

Researchers at the Belgian University of Leuven revealed a collection of vulnerabilities they found in audio accessories that use Google’s Fast Pair protocol. The affected accessories are sold by 10 different companies: Sony, Jabra, JBL, Marshall, Xiaomi, Nothing, OnePlus, Soundcore, Logitech, and Google itself.

Google Fast Pair is a feature that makes pairing Bluetooth earbuds, headphones and similar accessories with Android devices quick and seamless, and syncs them across a user’s Google account.

The Google Fast Pair Service (GFPS) utilizes Bluetooth Low Energy (BLE) to discover nearby Bluetooth devices. Many big-name audio brands use Fast Pair in their flagship products, so the potential attack surface consists of hundreds of millions of devices.

The weakness lies in the fact that Fast Pair skips checking whether a device is in pairing mode. As a result, a device controlled by an attacker, such as a laptop, can trigger Fast Pair even when the earbuds are sitting in a user’s ear or pocket, then quickly complete a normal Bluetooth pairing and take full control.

What that control enables depends on the capabilities of the hijacked device. This can range from playing disturbing noises to recording audio via built-in microphones.

It gets worse if the attacker is the first to pair the accessory with an Android device. In that case, the attacker’s Owner Account Key–designating their Google account as the legitimate owner’s—to the accessory. If the Fast Pair accessory also supports Google’s Find Hub network, which many people use to locate lost items, the attacker may then be able to track the accessory’s location.

Google classified this vulnerability, tracked under CVE‑2025‑36911, as critical. However, the only real fix is a firmware or software update from the accessory manufacturer, so users need to check with their specific brand and install accessory updates, as updating the phone alone does not fix the issue.

How to stay safe

To find out whether your device is vulnerable, the researchers published a list and recommend keeping all accessories updated. The research team tested 25 commercial devices from 16 manufacturers using 17 different Bluetooth chipsets. They were able to take over the connection and eavesdrop on the microphone on 68% of the tested devices.​

These are the devices the researchers found to be vulnerable, but it’s possible that others are affected as well:

• Anker soundcore Liberty 4 NC
• Google Pixel Buds Pro 2​
• JBL TUNE BEAM​
• Jabra Elite 8 Active​
• Marshall MOTIF II A.N.C.​
• Nothing Ear (a)​
• OnePlus Nord Buds 3 Pro​
• Sony WF-1000XM5​
• Sony WH-1000XM4​
• Sony WH-1000XM5​
• Sony WH-1000XM6​
• Sony WH-CH720N​
• Xiaomi Redmi Buds 5 Pro​

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We don’t just report on phone security—we provide it

Cybersecurity risks should never spread beyond a headline. Keep threats off your mobile devices by downloading Malwarebytes for iOS, and Malwarebytes for Android today.