San Francisco (AFP) – Twitter is probing a massive hack of high-profile users from Elon Musk to Joe Biden that has raised questions about the platform’s security as it serves as a megaphone for politicians ahead of November’s election.Posts trying to dupe people into sending hackers the virtual currency Bitcoin were tweeted by the official accounts of Apple, Uber, Kanye West, Bill Gates, Barack Obama and many others on Wednesday.”We detected what we believe to be a coordinated social engineering attack by people who successfully targeted some of our employees with access to internal systems an…