Binance exchange says it will cover customer losses as it scrambles to freeze affected assets, with about $3bn located so farQ&A: How big a deal is the $6.3bn crypto heist?Tell us: have you been affected by the Binance hack?The world’s largest cryptocurrency exchange has been hit by a record $6.3bn (£4.7bn) hack described as the biggest heist in history, with experts identifying North Korea as the likely culprit.Binance said it would cover all customer losses as it froze $3bn of the affected