Binance’s initial investigation suggested an engineer’s laptop was compromised, which allowed access to unauthorised withdrawals, but a later update said they had uncovered “additional points of breach”.

Richard Teng, Binance’s co-chief executive officer, said the hack was carried out by more than one person, and the hackers used sophisticated methods to hide their tracks, such as a “self-destruct mechanism”.

On Friday, the company said it had frozen around $3bn of stolen assets after working with law enforcement, intelligence firms and partners.

The investigation is ongoing, it added. The US Secret Service said on Friday it is “working around the clock” with private sector partners “to identify, freeze, trace, and recover funds” stolen…