← Saturday, September 26, 2026SecurityVulnerability
File-notification monitoring enables keystroke timing and password-prompt spoofing
Researchers demonstrate that file-notification monitoring can reveal inter-keystroke timing and help spoof KDE authentication prompts; a kernel fix partially mitigates the issue. The techniques show how metadata access can expose user activity even without permission to read files.
- What
- - Linux file-notification monitoring can reveal keystroke timing even when an attacker cannot read files in the monitored directory.
- How
- - Monitoring /usr/bin/pkexec can reveal when Polkit spawns an authentication prompt, allowing a fake password window to cover the real one.
- Why it matters
- - File-event access can threaten credential security and user privacy even without access to file contents.
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