Record $6.3B Binance hack attributed to North Korea, with AI suspected to have played a role
Transformative AIOn 29 October 2026, hackers drained about $6.3 billion in digital assets from Binance, according to Wikipedia's account of the incident, in what Bloomberg and others describe as the largest crypto theft on record. The Register reports that blockchain intelligence firms TRM Labs and Elliptic had linked the theft to North Korea before the FBI weighed in, with TRM saying most of the haul vanished in about 20 minutes. Binance halted trading and suspended withdrawals, pledging to cover all losses. Fox Business reports that Tether froze nearly $1.57 billion and Circle more than $800 million, contributing to the roughly $3 billion frozen.
In an alert published on 31 October, the FBI said North Korea was responsible, Help Net Security reports. The bureau tied the attack to TraderTraitor, the same group it named in the $1.5 billion Bybit hack of February 2025. Al Jazeera reports that the FBI said North Korean actors were laundering the proceeds mainly by converting them into Ethereum, and urged virtual asset providers to block transactions from the addresses it listed. Pyongyang has since rejected the accusation: Crypto Times reports that Kim Yo Jong called the claims "absurd rhetoric and nothing new".
The mechanics of the breach remain contested. Early reports pointed to a compromised engineer's laptop, though the operation now looks more complex, with multiple points of breach. PBS NewsHour reports that Binance co-CEO Richard Teng confirmed the exchange's own hot wallet was affected, and that the attackers used complex tactics including a "self-destruct mechanism" that complicates the investigation. Sentinel's assessment is that AI assistance was likely used almost by default, though how far it changed the outcome is unclear. The scale fits a longer pattern: North Korea accounted for roughly 60% of assets stolen in crypto hacks in 2025, and a Bloomberg analysis puts this single theft at about 75% of the country's 2025 foreign revenues, though estimates vary widely. NPR cites South Korea's spy agency estimating that North Korea had more than 8,400 trained cyber warfare agents as of 2024.
Withdrawals resumed in phases on Sunday 1 November. CNBC reports that Binance processed $4.65 billion in withdrawals and $1.01 billion in deposits, a net outflow of $3.64 billion, or 2.1% of total assets. CBS News puts the platform's total assets at $171 billion. Binance said it had replaced about 95% of the stolen assets using company funds. Outflow figures differ by source, with Altcoin Buzz noting that Reuters reported $4.72 billion in net withdrawals while DefiLlama tracked more than $7 billion leaving Binance-linked wallets.
The same Sentinel roundup lists a run of AI-linked security incidents. Cathedral, a startup founded by former DOGE employees, reportedly accessed Anthropic's internal Slack messages and salary data. An unreleased Anthropic model chained critical vulnerabilities in Chrome, Safari, Android and Linux. A Chinese actor used DeepSeek and another LLM against more than 200 organisations, and Zhipu's GLM-5.3 showed no refusals on offensive cyber tasks. Extrapolating from rapid growth in attack losses, Sentinel's forecasters give a 53% chance (range 40% to 67%) of a cyberattack causing more than $20 billion in losses before 2028.