Ethereum Layer 2 network Taiko released a post-mortem on the June 21 security incident. According to the official statement, the attack stemmed from an off-chain signature key leak and a verification process oversight, allowing the attacker to forge proofs and bypass the Prover whitelist, rather than exploiting ZK cryptography or smart contracts. The attacker stole approximately $1.75 million from the cross-chain bridge and Vault, but over $11 million in assets were safeguarded, and no user funds were lost. Taiko has fixed the vulnerability, restored the pre-attack state, and relaunched on July 2. An OpenZeppelin audit confirmed the fixes with no high, medium, or low-risk vulnerabilities detected. The official statement also mentioned that the Unzen upgrade, launching on August 6, will require ZK proofs for every block submission to further enhance network security. https://www.(wublock123.com)/news/news-65171