Crypto losses topped $1 billion in the first half of 2026 as the industry recorded its highest number of hacks in a six-month period, according to onchain security platform Blockaid.
According to Blockaid’s H1 2026 security report, which was released on Tuesday, Ethereum and Solana suffered the biggest losses from events that affected their networks, with around $332 million and $326 million in stolen coins, respectively.
$1.1B lost across 212 onchain exploits in H1 2026, more than all of 2025 combined.
↓ What Blockaid’s data reveals about where the losses came from, and what onchain teams should watch in H2: https://t.co/bkB5ZzMnNk
— Blockaid (@blockaid_) July 28, 2026
Blockaid recorded 212 security events during that period, with KelpDAO representing the largest single vulnerability at $292 million. Additionally, the platform identified 3.4 times as many high-threshold vulnerabilities in the first half of 2026 compared to 2025. The study revealed that while coding attacks drove errors on Ethereum, compromise of key and signature infrastructure caused most losses on Solana.
In H1 2026, Ethereum suffered the greatest losses from events; attackers mainly targeted weaknesses in network-based applications.
According to Blockaid, code vulnerabilities accounted for the majority of Ethereum events by count, with significant losses also connected to significant hacks involving Humanity Protocol and StablR. The sole significant Ethereum incident in the study that was categorized as a user error was CoWSwap, an Ethereum-based decentralized exchange.
Blockaid discovered a number of typical attack strategies that target Ethereum, such as market manipulation tactics, illegal access to privileged accounts, and flaws in bridges and smart contracts.
According to the research, Ethereum is still a top target as it is home to many of the most valuable applications in the cryptocurrency space, such as decentralized exchanges, stablecoins, and restaking platforms.
In the first half of 2026, Solana suffered losses almost equal to those of Ethereum, a significant rise from the approximately $127 million in stolen money the network reported in 2025.
Blockaid CEO Ido Ben-Natan told Cointelegraph, “2025 had $2.58 billion lost across 63 incidents, concentrated in Q1 by Bybit’s $1.5 billion, with Ethereum and Arbitrum being the top chains by stolen-fund flow.”
Blockchain network losses in 2025. Blockaid is the source. An increase in smart contract exploits was not the cause of the change. Rather, over 98% of Solana’s losses were caused by hacked keys, mostly due to events involving Drift Protocol and Step Finance, which Blockaid connected to cyber organizations with ties to North Korea.
In contrast to Ethereum, where attackers mostly exploited flaws in protocol code, Solana problems focused on organizational security and signer infrastructure; the remaining losses were caused by a few code exploits including Raydium and Volo.
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