An encrypted USB drive was stolen from a high-security lab. The only three employees with access were Alice (the coder), Bob (the hardware tech), and Charlie (the janitor). Alice said she was recompiling the core kernel. Bob said he was replacing a burnt-out motherboard. Charlie said he was mopping the server room floor. Detective Vance checked the server room floor and handcuffed Charlie. What was wrong with Charlie's alibi?
Charlie mopped the server room floor
A server room has sensitive electronics and active hardware; mopping a server room floor without shutting down power or causing a hazard exposes him, or more directly, server room floors are raised mesh tiles where water would ruin the systems below.
About this riddle
Detective riddles are tiny mysteries. Look for the detail in the story that does not fit; it is usually the clue that solves the case.
Difficulty: Medium. More like this: Detective riddles with answers or try Truth & Lie Island for a different kind of puzzle.
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