What is NOT an example of unintentional threat?

An employee enters important data incorrectly on a day when he accidentally leaves his glasses at home.

Malware written and run by a $$script kiddie$$ just to see what he could do destroys a company$$s information database.

A swine flu epidemic causes a massive reduction in the labor force that maintains a company$$ s systems.

The server for an Internet$-$based business crashes.