According to the source, Chainalysis reports DPRK-linked hackers stole roughly $1.0 billion across 20 crypto attacks in 2023, down from a record $1.7 billion in 2022, underscoring an ongoing multibillion-dollar threat to digital assets. Source: Chainalysis Crypto Crime Report 2024; Chainalysis Crypto Crime Report 2023. DeFi protocols and cross-chain bridges were the primary targets in 2023, concentrating smart-contract and bridge risk in major L1/L2 ecosystems such as Ethereum during exploit cycles. Source: Chainalysis Crypto Crime Report 2024. Enforcement effectiveness is rising as U.S. Treasury sanctions on Tornado Cash (Aug 2022), Blender (May 2022), and Sinbad (Nov 2023) disrupted DPRK laundering pipelines and drove marked declines in illicit mixer inflows. Source: U.S. Department of the Treasury press releases; Chainalysis research on mixer flows. Investigators recovered $30 million from the Lazarus-linked Ronin Bridge exploit, demonstrating growing clawback capability when exchanges and on-chain analytics coordinate quickly. Source: Chainalysis announcement on Ronin recovery, September 2022. For traders, monitoring on-chain movements from OFAC-designated addresses, mixer throughput, and DeFi exploit volumes can inform positioning and liquidity risk around BTC and ETH during security incidents and sanction events. Source: Chainalysis Crypto Crime Report 2024; U.S. Department of the Treasury designations.