Hackers took over the Twitter account of Twitter’s chief executive, Jack Dorsey, on Friday and used the account to broadcast a string of racist messages and bomb threats.
In the posts, the attackers claimed that Twitter’s San Francisco headquarters would be bombed, and used Mr. Dorsey’s account to retweet posts from several individuals appearing to claim responsibility for the hack.
The offensive posts were quickly deleted from Mr. Dorsey’s account. It appeared that the hackers used a third-party service called CloudHopper to make posts under Mr. Dorsey’s name. Twitter confirmed that the account had been compromised.
“We’re aware that @jack was compromised and investigating what happened,” the company said in a tweet.
This is a developing story and will be updated.