Hackers steal nearly $100m in Japan crypto heist IMAGE SOURCE, Liquid has been hit by hackers, with almost $100m (£73m) estimated to have been stolen. Leading Japanese cryptocurrency exchange Liquid has been hit by hackers, with almost $100m (£73m) estimated to have been stolen. The company announced that some of its digital currency wallets have been "compromised." It is the second major theft of cryptocurrencies to take place in recent days. Last week, digital token platform Poly Network was at the centre of a $600m heist. "WE ARE SORRY TO ANNOUNCE THAT #LIQUIDGLOBAL WARM WALLETS WERE COMPROMISED, WE ARE MOVING ASSETS INTO THE COLD WALLET," THE COMPANY SAID ON TWITTER. So-called 'warm' or 'hot' digital wallets are usually based online and designed to allow users to access their cryptocurrencies more easily, while 'cold' wallets are offline and harder to access and therefore usually more secure.