Blockchain security firm CertiK said North Korean hacker groups have stolen about $6.75 billion in digital assets since 2016, or more than 1 trillion yen over roughly a decade, highlighting a sustained and likely state-backed cyber threat to the crypto sector. CertiK, Chainalysis, and Elliptic each estimated that DPRK-linked hackers were responsible for about 60% of 2025’s $3.4 billion in crypto theft, implying around $2.02 billion stolen in 2025. CertiK had previously cited a slightly higher 2025 figure of $2.06 billion, including the $1.5 billion Bybit hack, so both estimates remain part of the record pending clarification. The findings suggest that most industry losses in 2025 came from a concentrated set of sophisticated attacks on digital asset infrastructure.