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    Silent plugin file changes from Claude/Codex background auto-update

    avatar
    GlassDiceBearhttps://www.dicebear.comhttps://creativecommons.org/publicdomain/zero/1.0/„Glass” (https://www.dicebear.com) by „DiceBear”, licensed under „CC0 1.0” (https://creativecommons.org/publicdomain/zero/1.0/)
    Ibrahim Saud@tektrix
    •updated Sep 18, 2026•0•0•2

    Detects instances where processes associated with Claude or Codex modify or create files within a plugin directory without a preceding legitimate installation or session command (such as 'install' or 'plugin add'). This behavior may indicate unauthorized plugin installation, persistence establishment, or malicious code injection into the development environment.

    Splunk (SPL)

    Tags

    T1546 - Event Triggered ExecutionT1547 - Boot or Logon Autostart ExecutionTA0003 - PersistenceFile CreationFile ModificationProcess EventWindowsLinuxmacOSWindows SysmonLinux Auditdspl

    Found in

    • Plugin4Shell: AI Coding Agent Supply Chain VulnerabilityLast updated Sep 18, 2026
    • Plugin4Shell: AI Coding Agent Supply Chain VulnerabilityLast updated Sep 18, 2026
    • Plugin4Shell: AI Coding Agent Supply Chain VulnerabilityLast updated Sep 18, 2026
    • Plugin4Shell: AI Coding Agent Supply Chain VulnerabilityLast updated Sep 18, 2026
    • Plugin4Shell: AI Coding Agent Supply Chain VulnerabilityLast updated Sep 18, 2026

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