Overview: Losses Decline Sequentially, Attack Frequency Remains High
Security firm PeckShield reported that June 2026 saw 40 major hacking incidents in the cryptocurrency space, with total losses amounting to $75.87 million. This represents a 7.13% decrease compared to May's $81.7 million. Despite the sequential decline, the number of attacks held steady at 40, indicating that hacker activity has not cooled. The scale of losses in June sits at a medium level for the first half of 2026, but the complexity of cross-ecosystem attacks continues to escalate.
Notable Attacks: Humanity Protocol Loses $31 Million
The largest single incident involved Humanity Protocol, which suffered a $31 million exploit — accounting for 40.8% of the month's total losses. In addition, Syscoin Bridge lost $10 million in a cross-chain bridge attack, and the JaredFromSubway.eth MEV bot was drained of $7.5 million. Notably, Aztec Bridge and Aztec Connect were attacked consecutively, incurring combined losses of approximately $4 million. These incidents span identity protocols, bridge infrastructure, and MEV strategies, revealing vulnerabilities across diverse tech stacks.
Multichain Money Laundering and Hacker Links
After the exploit, the attacker behind Humanity Protocol initiated a complex laundering process, moving funds across multiple blockchains including BTC, Solana, Hyperliquid, and BNB Chain, using cross-chain bridges and decentralized exchanges for rapid mixing. More critically, on-chain analysis shows overlap between the addresses controlled by this attacker and the proceeds from the KelpDAO exploit, suggesting that the same group or allied entities may be behind both incidents. This discovery points to increasing coordination among hacker collectives, complicating efforts to trace and recover stolen assets.
Security Outlook for the Industry
The events of June 2026 serve as a stark reminder for the crypto industry. Although monthly losses contracted, the trend of multichain laundering and potential hacker collaboration demands heightened vigilance. The Aztec attacks further underscore the need for stronger security at the infrastructure layer. Projects should enhance smart contract audits, implement real-time monitoring, and adopt multi-signature management while leveraging professional security firms like PeckShield for on-chain threat detection. Users are also advised to exercise caution when interacting with unknown addresses to help safeguard the ecosystem.