- Crypto Loss: $4.2 million in aEthWETH and aEthUNI.
- Attack Technique: Falsified ERC-20 permission signature.
- Security Bypass: Opcode contract manipulation.
- Web3 Security Alert: Scam Sniffer reports deceptive transaction approvals.
Crypto Fraud Unveiled An undisclosed individual recently encountered a severe setback, losing $4.2 million in a crypto phishing attack. The scam utilized a deceptive ERC-20 authorization manipulated by an opcode contract, allowing the attacker to bypass security measures.
The Opcode Menace The malicious opcode malware at the heart of this attack operates by rerouting funds through falsified signatures, creating new addresses for transactions. This tactic, identified by Web3 security firm Scam Sniffer, exploits vulnerabilities in ERC-20 permissions, complicating detection efforts.