A mechanic reading a tale of someone pouring metal filings in with the engine oil, I doubt they're going to think it's a good idea to go out and ruin their engine.
Is an author always required to include a disclaimer? Stupid is as stupid does.
The mechanic's disclaimer is going to be inherent in the text: "I once poured metal filings into an engine, and then everything went to hell". This isn't like that at all, it's a tale of how hacking somebody's systems without consent was a fun and rewarding idea.
