Coinbase forecast a hit of $180 million to $400 million from a cyber attack that breached account data of a "small subset" of its customers, the crypto exchange said in a regulatory filing on Thursday.

Coinbase said hackers had paid multiple contractors and employees working in support roles to collect information. It has fired those involved.

One of the world's biggest cryptocurrency firms, Coinbase, says a recent cyber attack will cost it up to $400m (£301m). The firm said it was contacted by hackers who claimed to have gained access to customer information,

Coinbase’s chief legal officer indicated the SEC's investigation is outdated, as the disputed metric was dropped two and a half years ago.

The SEC probes Coinbase over old user metrics while the company faces fallout from an insider breach and rising legal challenges

The SEC is reportedly investigating Coinbase over claims it overstated user numbers in past filings — just days before its entry into the S&P 500.