https://www.vice.com/en_us/article/xg84ja/twitter-hack-email-to-accounts-that-were-hacked

Last week, hackers took control of dozens of Twitter accounts and made them post the same tweet, a call to send bitcoins to a wallet with an unlikely promise to send back more cryptocurrency.   

Bill Gates, Warren Buffett, Mike Bloomberg, Apple, Jeff Bezos, Wiz Khalifa, as well as several cryptocurrency companies are among the victims of the massive hack. On Wednesday, Twitter reached out directly to the victims via email informing them of the hack, apologizing for it, and suggesting a series of actions to make sure the compromised accounts stay safe. As Motherboard reported, hackers used an internal user administration tool to take control of the accounts.