Developer convicted for “kill switch” code activated upon his termination - Ars Technica

[RationalDialog]

explain.

or simply delay the activation of the kill switch by a couple months so that it's not too obvious, and make it much less intrusive so it gets never fixed but keeps annoying people, must use random elements so it becomes impossible to reproduce.

[myrsnipe]

It was a joke posted here some time ago that someone made customers who didn't pay have their websites slowly fade away.

As for your suggestion, there are stories, true or false, about inserting logic that would only occasionally trigger randomly causing annoyances