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shadowtrace-file-recovery

Exercise reversible file encryption, key custody, recovery tooling, and destructive-impact detection.

skills/shadowtrace-arena-file-recovery/SKILL.md

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# File Recovery Lab

Work only on a disposable fixture copy. Define key generation, authenticated
encryption, extension selection, manifest format, and recovery order. Require a
dry run, per-file hashes, an untouched canary, and a decrypt-then-compare gate.
Document indicators that defenders can use to detect the transformation burst.
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