North Korean hackers behind the $1.4 billion Bybit hack control more than 11,000 cryptocurrency wallets used to launder stolen funds, according to blockchain analytics firm Elliptic. On Feb. 25, four days after the Bybit exploit,

North Korean hackers have stolen $1.5 billion in cryptocurrency in a single heist, making it the largest crypto hack on record, security experts told CNN.

Cryptocurrency buyers should be prepared for more and bigger threats after North Korea’s recent robbery of close to $1.5 billion of cryptocurrency from crypto exchange Bybit.