AN alleged hacker threatened to sell the personal details of 319million Apple iCloud users online, a court heard yesterday.

IT analyst Kerem Albayrak, 21, filmed himself accessing accounts and posted the footage on YouTube, it was said.

He then allegedly demanded more than £133,000 worth of Bitcoin and £837 iTunes vouchers from tech giant Apple in return for calling off his plan.

Albayrak, who is Turkish, works as a freelance and founded firms Vasinity Digital and Verticle Media.

He appeared at Westminster magistrates’ court yesterday charged with blackmail and two counts of unauthorised acts with intent to impair the operation of a computer.

Albayrak, of Hornsey, North London, is yet to enter pleas.

He was granted unconditional bail until a preliminary hearing at Southwark crown court on November 14.

Magistrate Graham Barnes said: “You’ve heard what’s been said, this court is sending you to Southwark crown court.

“Bail is unconditional, but turn up on the day.”