Twitter says it's investigating after hackers targeted several high-profile accounts in a cryptocurrency scam.
The profiles - including those of Barack Obama, Bill Gates and Apple - posted a message encouraging users to send money to a Bitcoin address.
The social media website says it was a "co-ordinated social engineering attack".
Technology reporter Will Guyatt says it appears to have been a simple hack in many ways.
IN: "Outside...
OUT: ...compromised."
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