The switch was designed to trigger upon his termination
WTF?! It's tempting to consider getting revenge on a company for firing you. Creating a kill switch that crashes systems and locks thousands of employees out of their accounts, for example, might sound like sweet justice, but a developer who implemented this plan has been convicted of criminal sabotage and faces up to a decade in prison.
What just happened? Sabotaging undersea internet cables has become a common act of aggression in recent times. Following disruption to two of these cables in the Baltic Sea, including one that appears to have been physically cut, it seems the tactic is once again being employed. And there's no prize for guessing the main suspect.