Within minutes, an apparently coordinated hack began: A mass takeover of the most prominent names in crypto. Within hours, even Barack Obama’s account was compromised.

The messages pumped a bitcoin giveaway scam associated with an organization called “Crypto For Health.”

First, they came for Binance’s account. Gemini was next. Then Coinbase. CoinDesk. Justin Sun. Charlie Lee. Bitcoin.org. Kucoin. Bitfinex. The Tron Foundation. Ripple.

Millions of collective followers began seeing the same, cloying message: “I am giving back to my fans. All Bitcoin sent to my address below will be sent back doubled.”

About one hour in, the hack ditched its “Crypto For Health” tagline and went mainstream. Elon Musk’s account led the charge. Then Bill Gates. Then Elon Musk’s account came back for more. Kanye showed up an hour later. Jeff Bezos promised $50 million. Michael Bloomberg. Joe Biden. Barack Obama.