Security Breach at 402Bridge Initiated by Private Key Leak

The post Security Breach at 402Bridge Initiated by Private Key Leak appeared com. Key Points: 402Bridge breach linked to private key leak, insider suspicion remains. Stolen funds moved to Arbitrum, no further transactions. First major security incident for 402Bridge, prompting safety concerns. The 402Bridge project experienced a security breach, traced to a private key leak, potentially involving insider actions, resulting in the theft of approximately 4. 2 ETH transferred to Arbitrum. This incident marks the first major security breach for 402Bridge, highlighting persistent vulnerabilities in cross-chain bridge protocols and raising concerns about insider threats in the cryptocurrency sector. Private Key Leak at 402Bridge Raises Insider Concerns SlowMist’s analysis reveals that the attack on 402Bridge stemmed from a private key leak, leaving insider involvement a possibility. The project’s domain was registered only two days before shutting down, suggesting suspicious preparations. Market observers note that no major statements from project leaders or government bodies are available. The stolen funds have been moved to the Arbitrum network, but no further transfers have been detected. This incident marks a significant challenge in maintaining security in the industry. “The 402Bridge attack appears to have originated from a private key leak, and the possibility of insider involvement cannot be ruled out.” Cosine, Analyst, SlowMist Lessons from Past Cross-Chain Breaches Impacting DeFi Did you know? The 402Bridge incident is part of over 49 recorded cross-chain breaches in the past three years, most stem from similar vulnerabilities like private key leaks and contract flaws. Ethereum, traded as ETH, currently stands at $4,098. 38 with a market cap of $494. 67 billion, accounting for 12. 86% of the market. In the past 24 hours, trading volume reached $38. 37 billion, reflecting an 11. 15% change, as listed on CoinMarketCap. Ethereum(ETH), daily chart, screenshot on CoinMarketCap at 04: 44 UTC on October 28, 2025.