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Decades-old file security flaws found in Android, Linux, macOS, and Windows

Researchers said unprivileged access to file-event APIs can expose keystrokes, website visits and credentials, with Linux showing 93.1% keystroke accuracy in tests.

Summary by The Register
Security researchers report that Microsoft considers the side-channel leak of file events to be by design

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Decades-old file security flaws found in Android, Linux, macOS, and Windows

Security researchers report that Microsoft considers the side-channel leak of file events to be by design

·London, United Kingdom
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Researchers at Graz Technical University found that the file notification systems of Android, Linux, macOS and Windows can filter signals about the activity of other users. Data does not reveal the contents of the files, but could help infer keystrokes, visited pages and system changes.

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The Register broke the news in London, United Kingdom on Thursday, September 24, 2026.
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