https://www.cnbc.com/2017/11/09/jack-dorsey-ceo-of-twitter-and-square-speaks-at-dealbook-after-sq-earnings.html

Twitter CEO Jack Dorsey said on Thursday that it should not have been possible for one of his employees to deactivate the president's Twitter account.

"We had an employee who, on this person's last day, took it upon themselves to deactivate the account," Dorsey said. "There are a number of things that came out of this for us. First, that should never have been possible. We started looking into the controls we have in place, what we can improve and where we have weaknesses, where we have gaps. Second, particular policies around what agents have control over and what they don't."