Crypto exchanges make it easier to buy, sell and store digital assets, but they come with risks, too. A massive cybersecurity breach involving Binance, the world's largest cryptocurrency exchange, has raised fresh concerns about the safety of digital assets, with an estimated $6.3 billion (around. Binance has reported a substantial security breach resulting in estimated losses of $6.3 billion. The breach was linked to a compromised laptop of a DevOps engineer facilitating.