How much data does your favorite messaging app collect? New study shows 90% of messaging apps now include AI that puts privacy at risk | Tech Radar
Overview
News, deals, reviews, guides and more on the newest computing gadgets
Start exploring exclusive deals, expert advice and more
Details
Unlock and manage exclusive Techradar member rewards.
Unlock instant access to exclusive member features.
Get full access to premium articles, exclusive features and a growing list of member rewards.
How much data does your favorite messaging app collect? New study shows 90% of messaging apps now include AI that puts privacy at risk
A new study highlights how AI integration and aggressive data tracking are chipping away at our digital privacy, even on encrypted platforms.
When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.
Nine out of the top 10 messaging apps offer end-to-end encryption, but 90% now feature AI tools that could expose your private data.
Signal ranks as the most private messaging app, utilizing quantum-secure cryptography and collecting only your phone number.
Meta’s Messenger and LINE rank among the worst offenders for aggressive data harvesting, collecting vast amounts of user information for advertising and tracking.
We trust messaging apps with our most intimate conversations, from sharing passwords with family members to venting about our bosses. However, while we naturally assume our private chats are staying private, a disturbing new analysis reveals that your favorite app could be harvesting your data right under your nose.
A recent study by cybersecurity firm Surfshark took a magnifying glass to the 10 most popular i OS messaging apps of 2025. The researchers looked past basic marketing promises, examining encryption standards, data collection practices, and the creeping introduction of artificial intelligence features.
The good news is that basic security is becoming an industry standard. 9 out of the 10 apps analyzed provide end-to-end encryption (E2EE), meaning nobody, not even the app developer, should be able to intercept and read your messages.
If you combine a secure messaging platform with a reliable VPN to encrypt your wider web traffic and hide your IP address, your daily communications are generally safe from prying eyes.
However, the bad news is that aggressive data collection and poorly implemented AI integrations are quietly undermining these encryption efforts.
Express VPN uncovers 3.7 million items of leaked AI chatbot data
i Phone owners urged to change this key privacy setting after FBI recovers suspect’s deleted Signal messages
Workplace apps gathering far more personal data than we all think
The best (and worst) messaging apps for your privacy
When it comes to treating your data with respect, the messaging market is sharply divided. Surfshark evaluated 35 specific data types listed in the Apple App Store to see exactly what these companies are scooping up.
With an exceptional privacy score of 0.99, Signal easily takes the crown. It avoids user tracking entirely and only collects one piece of data: your phone number.
Alongside Apple’s i Message, Signal is also one of the only apps to offer quantum-secure cryptography, future-proofing your messages against next-generation cyber threats.
On the other end of the spectrum, LINE ranks at the absolute bottom with the lowest privacy score. Both LINE and Meta's Messenger are notorious for their data-hungry practices.
While the average messaging app collects 17 data types, Meta's Messenger collects a staggering 32 out of a possible 35 data types.
The end of encrypted DMs? Why Instagram is rolling back its biggest security feature
'88% Confident 90% Misled': Government & critical infrastructure leaders fundamentally misunderstand the security of the apps they use
Travelling back from Asia? Surfshark warns against the silent data collection of the most popular local travel apps
Furthermore, 30 of those data types can be exploited for purposes completely unrelated to the app's functionality, such as targeted advertising and product personalization.
Discord stands out as the only app in the study that completely fails to provide end-to-end encryption for text-based messages. Along with LINE and Rakuten Viber Messenger, Discord is also one of the few platforms that actively collects data specifically for user tracking.
While encryption keeps hackers out, the widespread adoption of AI tools is creating entirely new vulnerabilities. A staggering 90% of the messaging apps analyzed by Surfshark now offer some form of AI integration.
Whether it's a virtual assistant summarizing a long chat or an AI bot translating a message, these features require access to your conversational data. You aren't just talking to a helpful virtual friend; you are feeding data directly back to the service provider.
Highlighting this threat, researchers from New York University and Cornell University warned in the Surfshark report that “AI features are being developed at a rapid pace, raising significant security risks for users of E2EE applications”.
Ultimately, technology can only protect you so far. The FBI and the Cybersecurity and Infrastructure Security Agency (CISA) recently issued warnings about phishing campaigns specifically targeting secure platforms like Signal.
Want to know more? You can read the full Surfshark report here
Rene Millman is a seasoned technology journalist whose work has appeared in The Guardian, the Financial Times, Computer Weekly, and IT Pro. With over two decades of experience as a reporter and editor, he specializes in making complex topics like cybersecurity, VPNs, and enterprise software accessible and engaging.
You must confirm your public display name before commenting
1 One year ago, Ukraine launched Operation Spiderweb to destroy billions of dollars worth of Russian combat planes – It 'served as a warning to the United States'
2 Final Fantasy 7 Revelation let's you jump out of an airship Fortnite style
3‘Our hardware is designed to be picked up and shaken about’: Aquark Technologies takes quantum sensing outside of the lab as a viable GNSS alternative
4 Quordle hints and answers for Saturday, June 6 (game #1594)
5NYT Strands hints and answers for Saturday, June 6 (game #825)
Tech Radar is part of Future US Inc, an international media group and leading digital publisher. Visit our corporate site.
© Future US, Inc. Full 7th Floor, 130 West 42nd Street, New York, NY 10036.
Key Takeaways
- News, deals, reviews, guides and more on the newest computing gadgets
- Start exploring exclusive deals, expert advice and more
- Unlock and manage exclusive Techradar member rewards
- Unlock instant access to exclusive member features
- Get full access to premium articles, exclusive features and a growing list of member rewards
