https://www.theregister.co.uk/2019/06/20/coinbase_firefox_zero_day/

The development and release of a critical Firefox security patch this week was, in part, triggered by an attempted cyber-heist of crypto-coin exchange Coinbase.

Coinbase chief information security officer Philip Martin said on Wednesday night the digital-dosh trading site was one of the prime targets of hackers, who tried to exploit a zero-day vulnerability, CVE-2019-11707, a JavaScript type-confusion flaw in Firefox, to execute malicious code on Coinbase staff machines.