Monthly Crypto Hack Report: $247 Million Stolen in July

July became the second-worst month of 2026 for cryptocurrency theft after hackers stole an estimated $247.4 million. The attacks spanned everything from hardware wallets and bridges to lending protocols and trading platforms.

The total was more than triple the roughly $75 million that was stolen in June and four times May’s $60 million, according to DefiLlama data. Only April, when losses reached approximately $644 million, has recorded more stolen crypto this year.

Monthly sum stolen through crypto hacks (Source: DeFiLlama)

The defining incident was the Coldcard hardware wallet exploit, but July also showed just how attackers continue to target oracle systems, private keys, bridges and operational infrastructure.

Coldcard was responsible for by far the largest theft of the month. Galaxy Research identified at least three confirmed attack waves affecting roughly 7,300 Bitcoin wallets and resulting in more than $100 million in stolen BTC. A suspected fourth wave could raise losses to approximately $130 million. DefiLlama currently estimates the incident at around $115 million.

Using DefiLlama's estimate, Coldcard alone accounted for roughly 46% of all crypto stolen during July.