The hackers stole $290 million in cryptocurrency from Kelp DAO, which is a policy that allows locked-up crypto investments to generate passive income. The hackers took advantage of Kelp DAO's security configuration, since it didn't require multiple verifications to approve a transaction. Since 2017, North Korean hackers working with Kim Jong Un's regime have become really successful and have stolen a total of $6 billion. This theft is reported to be the largest crypto theft of the year so far.