Crypto hackers stole around $75.9 million across 40 major incidents in June, a 7.1% drop from May's $81.7 million, according to blockchain security firm PeckShield.
The Humanity Protocol exploit accounted for the largest share at $31 million, per PeckShield's tally. Onchain analyst Specter first reported that wallets connected to the project had drained over $31 million on June 9, before Humanity Protocol's own investigation later put the total closer to $36 million, The Block reported. Founder Terence Kwok attributed the breach to a compromised private key.
Syscoin Bridge lost $10 million to a validation flaw that let an attacker mint billions of unbacked SYS tokens without a corresponding burn, PeckShield said.
A bot tied to the address JaredFromSubway.eth, known for running MEV sandwich attacks, was itself exploited for $7.5 million, according to the tally. Secret Network, Polymarket users, SecondFi, and TESSERA rounded out the rest of June's larger incidents, with losses ranging from $2.4 million to $4.67 million.
Notably, Aztec's deprecated infrastructure was hit twice in June. PeckShield tracked $2.16 million in losses from what it labeled the Aztec Bridge and another $2.1 million from Aztec Connect, both immutable contracts the Aztec Foundation says it no longer controls or can pause, The Block reported. Combined, the two attacks cost the project roughly $4 million.
