New Delhi, Oct. 30 -- Binance, the world's largest cryptocurrency exchange, said a security breach had resulted in an estimated $6.3 billion impact that analysts said could amount to the biggest crypto heist ever and might make investors rethink the risks of owning digital assets.

Binance said it had worked with partners to freeze the affected assets, with about $3 billion located so far. It gave no update on the status of the remaining $3.3 billion as Binance co-founder Yi He said the company would cover "all hacking losses".

An initial investigation suggested the breach may have started with a hacked laptop belonging to one of its engineers, which let an attacker gain access to one of its systems and make unauthorized withdrawals, Bin...