Crypto Victim Loses $908,551 in Sophisticated Phishing Scam After 15 Months of Delay
On August 3, 2025, a startling crypto theft was revealed involving a victim who lost $908,551 worth of USDC stablecoin in a highly sophisticated phishing attack that unfolded more than a year after the initial compromise. This incident highlights the growing complexity and patience of scammers in the cryptocurrency ecosystem.
Breakdown of the Attack
On April 30, 2024, the victim unknowingly signed a malicious ERC-20 token approval transaction—likely tricked by a phishing site or a fake airdrop—granting ongoing access permissions to the scammer’s wallet, identified by the address “0x67E5Ae.” The attack, which was finally executed on the early hours of August 2, 2025, at 4:57 a.m. UTC, resulted in the draining of $908,551 in USDC from the victim’s wallet.
The stolen funds were then associated with the notorious “pink-drainer.eth” wallet address, well known in crypto circles for conducting wallet-draining scams. The onchain data and analysis were shared by Scam Sniffer on the social platform X, who underscored the unusual delay of 458 days between approval and the actual fund theft.
The Scammer’s Strategy: Patience Pays Off
What distinguishes this phishing attack is its delayed execution. For more than a year, the compromised wallet exhibited minimal activity and held insignificant value, providing the attacker little incentive to initiate a theft.
This changed dramatically on July 2, 2025, when the victim deposited two significant amounts into the compromised wallet:
- $762,397 transferred from a MetaMask wallet at 8:41 p.m. UTC
- $146,154 sent shortly after from a Kraken wallet
For about a month, the scammer monitored the wallet closely, waiting for further deposits or activity to justify the risk of draining the funds. Finally, on August 2, the attacker carried out a single, large transaction to steal the total funds.
This tactic—waiting months or even years after gaining token approval before stealing—represents a new hallmark of phishing approval attacks, allowing attackers to maximize their gains by striking only when wallet balances are substantial.
Protecting Yourself: Regular Review and Revocation of Token Approvals
Scam Sniffer’s notification of this event came with a strong reminder for crypto users to regularly review and revoke old token approvals. Such approvals, if left unchecked, provide attackers with ongoing access to wallets, even long after the initial signing.
Ethereum users can utilize tools like Etherscan’s Token Approval Checker to identify and revoke unnecessary permissions. However, revoking approvals requires the payment of a gas fee, a necessary cost for maintaining wallet security.
Ongoing Concerns in the Crypto Space
This incident is part of a broader trend of crypto losses due to scams and exploits. In July 2025 alone, bad actors stole over $142 million from the crypto ecosystem across at least 17 separate attacks. The most significant of these losses was linked to a major exploit of the crypto exchange CoinDCX.
Such incidents underscore the urgent need for continuous vigilance and security education among crypto users, particularly as scammers increasingly employ sophisticated methods to bypass traditional safeguards.
Editor’s Note:
The crypto community is urged to stay informed on security best practices and leverage available tools to safeguard their digital assets. Regularly auditing wallet permissions and remaining skeptical of unsolicited transaction requests can prevent falling victim to delayed phishing attacks like the one detailed above.
Source: Scam Sniffer, onchain data analysis shared via X
Reported by Brayden Lindrea, Cointelegraph, August 3, 2025