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 . Only April, when losses reached approximately $644 million, has recorded more stolen crypto this year. Galaxy Research at least three confirmed attack waves affecting roughly 7,300 Bitcoin wallets and resulting in more than $100 million in stolen BTC. This is proof that cold storage can reduce exposure to online attacks, but it does not eliminate risks originating inside wallet hardware or firmware. The Cardano wallet lost roughly $2.4 million to $2.6 million and featured in several July hack roundups, but SecondFi's own timeline says the principal attack waves occurred between June 21 and June 23.