Online deep-fakery and runs on banks all raise worrying issues over the march of artificial intelligence

Hackers crack the Twitter account of the US news agency Associated Press. They post a tweet: "Two explosions at the White House, the president is injured." The S&P 500 share index drops 1pc. Sounds like fiction? This happened a decade ago. Thankfully, the market recovered quickly after Barack Obama's press secretary confirmed no explosions and no injury. The world of online fakery has moved on a lot since. Advances in artificial intelligence have made more sophisticated chatbots and bogus photos and videos easier to produce and propagate. Meanwhile, bankers are quickly realising how people can move their money faster than…