Defense & IR · pro · solved in-browser (no VM needed) · 3 tiered hints
Write /etc/audit/rules.d/time.rules to detect clock tampering that would forge log timestamps. Add an -a always,exit rule for arch=b64 covering the adjtimex, settimeofday and clock_settime syscalls; add a -p wa watch on /etc/localtime; and tag every rule with the key (-k) time-change. (Authored config, graded structurally — the engine isn't run here.)
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Incident response: evict rogue accounts, eradicate persistence, attribute a breach.
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