Blockchain security firm CertiK has detected a major security breach on Arbitrum, where an attacker bypassed signature verification to steal $140,000.

🔴 How It Happened:

The attacker exploited an arbitrary smart contract call vulnerability, allowing fraudulent contract approvals. Once users unknowingly approved these contracts, external calls were made to drain funds—all without needing valid signatures!

⚠️ Key Takeaways:

  • CertiK’s AI Agent flagged multiple suspicious transactions.

  • Users were urged to revoke approvals immediately to prevent further losses.

  • This exploit highlights DeFi’s ongoing security challenges, where many smart contracts lack robust validation checks.

⏳ What’s Next?

Arbitrum’s team has yet to respond, but incidents like these could shake confidence in its DeFi ecosystem. If vulnerabilities persist, investors may start pulling funds to safer platforms.

📉 Crypto Security at Risk?

This breach is part of a larger trend—over $1.5 billion was lost to hacks & frauds in February alone! The biggest losses included:

💰 $1.4B – Bybit Hack

💰 $49.5M – Infini Exploit

💰 $9.5M – zkLend Attack

🔥 Stay Safe! Always verify contracts before approving transactions, and use trusted security tools to monitor suspicious activity.

#Crypto #BlockchainSecurity #Arbitrum #CertiK #BinanceTradeSmarter