Cross-chain protocols lose $35M in coordinated attacks targeting key vulnerabilities

Multiple blockchain protocols, including Verus and B² Network, suffered a series of cyberattacks within hours of each other, resulting in combined losses of approximately $35 million. The attacks targeted Bitcoin and Ethereum-linked cross-chain systems rather than the underlying blockchains themselves. Attackers exploited weaknesses such as compromised private keys, upgrade permissions, and flawed validation checks. Notably, the breaches occurred without breaking the core cryptographic security of the underlying networks. The incidents highlight systemic vulnerabilities in cross-chain infrastructure that can be exploited independently of base-layer protections.