Defense & IR · pro · solved in-browser (no VM needed) · 3 tiered hints
Write /etc/aide.conf to baseline critical paths. Define a rule group named NORMAL whose attribute list includes the sha256 checksum (e.g. NORMAL = p+i+n+u+g+s+m+c+sha256), apply NORMAL to /bin (and ideally /sbin and /boot), and exclude the noisy /var/log tree with a leading ! negation line. (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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