Casey Newton, writing at The Verge:
On Tuesday morning, members of the S3 team were debugging the billing system. As part of that, the team needed to take a small number of servers offline. “Unfortunately, one of the inputs to the command was entered incorrectly and a larger set of servers was removed than intended,” Amazon said. “The servers that were inadvertently removed supported two other S3 subsystems.”
Someone enters the wrong command in Terminal, and next thing you know, entire websites are down and people can’t turn on their IoT lights in their house. That’s one powerful Terminal window.