Twitter hack: What went wrong and why it matters

There are a lot of unanswered questions about the Twitter hack on Wednesday night - but one thing most agree on is it could have been far worse.

Potentially thousands of people were scammed out of money after hijacked accounts of prominent verified users promised to double the money fans sent them in the cryptocurrency Bitcoin.

Using Twitter's internal systems, the cyber-criminals' messages had a reach of at least 350 million people.

And it looks like it made them about $110,000 (£86,800) in the few hours that the scam was active.