Attacks Using Blockchain as Command Infrastructure Up 420% in a Year, Chainalysis Reports

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Blockchain analytics firm Chainalysis announced on September 17 that activity using public blockchains as command infrastructure for cyberattacks rose 420% over the past 12 months. State-linked attackers tied to North Korea and Iran are driving the increase, the company said. Attackers are using a technique of storing malware commands and connection destinations in blockchain transaction data and smart contracts, which the company calls "blockchain dead drops." According to Chainalysis, malicious data insertions rose from an average of 2.06 per day to 11.1 per day, and were up 440% after the spread of high-performance Chinese open-source AI. North Korean hackers combined BNB Smart Chain, Tron, and Aptos, with infected devices first checking Tron and switching to Aptos if that failed. Google's Threat Intelligence Group also reported that North Korean attackers have used a similar technique since February 2025, with fake recruiters posing as technical tests to get cryptocurrency sector developers to run malware.

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