According to Foresight News, Beosin reported that a DoS (Denial of Service) vulnerability was discovered in the P2P (peer-to-peer) protocol of Sui Network. This vulnerability could potentially cause Sui Network nodes to crash due to memory exhaustion. The DoS vulnerability was caused by a 'memory bomb'. On August 1, the Sui mainnet_v1.6.3 version was released, which fixed the vulnerability.