The most dangerous browsers of 2025 named: ChatGPT Atlas and Chrome lead the anti-rating

In an era when browsers collect more and more data and AI features have become the norm, privacy has moved to the forefront. Digitain conducted a study that evaluated popular browsers not by speed or convenience, but by how well they protect user data and limit tracking. The results were surprising: AI-based newcomers ended up at the bottom of the list, while classics like Chrome performed poorly.

Worst for security: AI browsers and big tech

Last place went to ChatGPT Atlas from OpenAI. The AI-based browser received the maximum risk score of 99 out of 100. It failed key tests for connection security, tracker blocking, and overall privacy.

Second place in the anti-rating was taken by Google Chrome with 76 points, tied with Vivaldi. Microsoft Edge scored 63, Opera 58. Ungoogled Chromium rounded out the top five with 55 points.

Next came Mozilla Firefox with 50, Apple Safari with 49, DuckDuckGo with 44, and Tor with 40, showing better but still imperfect results.

Why AI browsers are high risk

Digitain’s head of digital marketing, Paruyr Harutyunyan, explained that AI-based browsers, including ChatGPT Atlas and Comet, attract users with new features but require closer attention to security. They often collect more data to train models, which increases tracking risks.

Most secure: Brave and Mullvad

The leaders of the ranking were Brave and Mullvad Browser. Mullvad is an open project focused on maximum anonymity and minimal tracking. Brave blocks ads and trackers by default and also offers a built-in VPN in its premium version.

What this means for users

The study shows that popularity does not equal security. Chrome dominates market share but lags behind in privacy. AI browsers are a trendy direction, but for now they remain underdeveloped when it comes to data protection.

In brief

Digitain named the worst browsers for privacy: ChatGPT Atlas with a risk score of 99 out of 100, Chrome and Vivaldi with 76, Edge with 63, and Opera with 58. The safest were Brave and Mullvad, with minimal tracking. AI browsers may be interesting for their features, but they pose risks to personal data. Choose carefully, because privacy matters more than convenience.