Coinbase: "In mid-June, a sophisticated attack leveraging two Firefox 0-day vulnerabilities, spear phishing, and social engineering targeted our employees. Coinbase Security detected and blocked the attack. We talk about how it unfolded for the first time"
This was posted on r/btc earlier today. The Coinbase blog is an interesting read. Highlights the need for hardware wallets. I trust the Brave browser doesn't have similar vulnerabilities.