Attackers stole about $6.34 billion from Binance's hot wallet by accessing an internal wallet-signing service and moving assets outside its normal withdrawal process, and Coinbase said its customers were unaffected.

The defensive side of crypto, covering how exchanges, protocols and holders get hacked, exploited or scammed, and what is done to prevent it.

The Binance breach renews the debate over keeping funds on exchanges and freezing stolen assets.