Slow Mist: Claude Desktop Exposed for Secretly Writing Browser Backdoor Files

On April 21, Slow Mist’s Chief Information Security Officer 23pds posted on X platform to alert users that Claude Desktop has been reported to secretly write browser backdoor files. Reports indicate that when users install the Claude Desktop application, it writes a special file to all Chromium-based browsers on the computer without the user’s knowledge. This file acts as a pre-authorized backdoor, which, when used in conjunction with specific browser extensions, can gain complete control over the user’s browser.

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