U.S. law enforcement agencies seized almost $30 million worth of crypto related to NetWalker ransomware in January 2021, according to blockchain research firm Chainalysis.
The seizure is the largest ever related to ransomware, Chainalysis said.
Law enforcers seized just under 720 bitcoins BTC$67,718.28 and 15.7 monero (XMR), equating to over $29.4 million at today's prices.
NetWalker attackers extorted tens of millions of dollars from businesses and governments in 2020, burrowing into and encrypting victims' computer networks. It followed a ransomware-as-a-service model whereby individual hackers conducted the attacks and then shared the profits with NetWalker.
One such hacker was Sebastien Vachon-Desjardins, who Chainalysis said had netted more than $14 million in bitcoin since February 2018, worth $27 million by January 2021. Earlier this month Vachon-Desjardins was jailed for seven years in Canada after pleading guilty to a number of charges including "participating in the activities of a criminal organization."
New research claims specialized AI dramatically outperforms general-purpose models at detecting exploited DeFi vulnerabilities.
What to know:
A purpose-built AI security agent detected vulnerabilities in 92% of 90 exploited DeFi contracts ($96.8 million in exploit value), compared with 34% and $7.5 million for a baseline GPT-5.1-based coding agent running on the same underlying model.
The gap came from domain-specific security methodology layered on top of the model, not differences in core AI capability, according to the report.
The findings come as prior research from Anthropic and OpenAI shows AI agents can execute end-to-end smart contract exploits at low cost, accelerating concerns that offensive AI capabilities are scaling faster than defensive adoption.