Defense & IR · easy · solved in-browser (no VM needed) · 3 tiered hints
Write /etc/modprobe.d/blacklist-hardening.conf to neutralize attack-surface modules. For both usb-storage and dccp, add an install <module> /bin/true line so loading is silently redirected, and add a blacklist <module> line so they are not auto-loaded. (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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