Crypto security incidents generated about $2.68 billion in gross losses across 658 events through September 2026, according to blockchain security firm CertiK. Third-quarter losses totaled $1.26 billion across 247 incidents, up 53.9% from $819.4 million across 219 events in the second quarter. September was the year's most damaging month, with CertiK's quarterly data showing $768.5 million stolen in 99 attacks, while later annual accounting put the month's gross losses at about $766.5 million. Bitget's $387.5 million breach, involving fraudulent withdrawal requests from hot wallets, and the Liquid Network incident drove much of the damage. Insurance coverage for blockchain-related risks stood at $130.2 million in late August, down 20.2% from a year earlier, even as bitcoin rose 40% during the quarter. Elliptic linked more than $1 billion in 2026 crypto thefts to suspected North Korean hackers.