PANews reported on June 15 that the full-chain NFT protocol Holograph released a security incident update on Twitter, saying that a former contractor exploited a vulnerability to deploy an unverified contract on Mantle and minted an additional 1 billion HLG tokens. The protocol has been temporarily locked. The team is developing strategies to mitigate the impact of the vulnerability and working with security experts to prevent such vulnerabilities from happening again. The attacker's exchange accounts on Bybit, Gate, KuCoin, Bitget, and Backpack have been frozen. As of today, at least 200 million of the 1 billion additional HLGs have been frozen. As a precaution, Bybit, Gate, KuCoin, Bitget, and Backpack have suspended all HLG deposits and withdrawals. In the future, the protocol will be audited by a third party, and the full-chain tokenization infrastructure and applications will continue to be promoted.