Social media

When hackers took over the Twitter account of Associated Press in April, they triggered a sell-off that wiped billions of dollars off the value of global stock markets.

The anonymous saboteurs sent a bogus tweet from AP’s main account to its 1.9m followers, saying: “Breaking: Two Explosions in the White House and Barack Obama is injured.” Markets rebounded as people realised the tweet was fake, but the incident was one of the most dramatic demonstrations yet of the influence that social media wields over business and finance.

From London to Delhi, people are spending an increasing amount of time on social media platforms such as Twitter, LinkedIn and Facebook, which has 1.1bn monthly active users, half of whom use the site every ...

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