The importance of power industry security is seen from Bermuda network power interruption event

On February 3, 2023, Bermuda suffered a massive power outage. Belco, the island's sole electricity provider, suffered a "serious incident", the local government said, and advised customers to "unplug all sensitive electrical equipment" to avoid overnight repairs that could damage electrical appliances. The massive outage affected most Internet connections in Bermuda, with some customers unable to make phone calls. While it's unclear what caused the massive outage, there are speculation that it was related to cyber security or a human accident.