A mystery hacker allegedly stole $25m (£20m) in crypto-currencies – and then returned the funds two days later.
Records show that funds in a variety of crypto-currencies were withdrawn from the DForce platform based in China.
A sum of $10m was taken in Ethereum, for example, while a further $10m was taken in digital coins tied to the US dollar and $4m in other coins.
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Source: BBC News