ChainCatcher report: Syscoin has posted on X with an initial update regarding the recent cross-chain bridge security incident involving 5 billion SYS tokens. The bridge service has been temporarily suspended, and the team is currently investigating and addressing the validation vulnerability. The attacker exploited a flaw in the bridge’s validation process to create unauthorized SYS outputs on the UTXO side. The affected funds have been transferred and split, and the team is tracking them while coordinating with exchanges and ecosystem partners to prevent contaminated UTXOs from being deposited, traded, or further distributed. A fix has been identified, and users are advised not to interact with the bridge until it is restored.
Syscoin Cross-Chain Bridge Compromised, Impacting 5 Billion SYS Tokens
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Summary
Syscoin confirmed a security breach in its cross-chain bridge, affecting approximately 5 billion SYS tokens. Attackers exploited a validation flaw in the cross-chain process, generating unauthorized SYS outputs on the UTXO side. The bridge has been paused while the team works to resolve the issue. Funds have been moved and fragmented, with the team actively tracking the transactions. Coordination with exchanges is underway to prevent the compromised UTXOs from entering the market. A solution has been implemented, and users are advised to avoid the bridge until it is restored. This incident adds to recent on-chain developments underscoring significant security risks in DeFi infrastructure.
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