$900K Crypto Scam Took 458 Days: Old Wallet Approval Turns Deadly

Behind the Scenes of $900K Crypto Phishing Attack took 458 Day of wait

You will be shocked by the attacker's patience of 458 days to rob $900k. The incident, recently reported by popular crypto scam tracker ScamSniffer, is a shocking reminder of how unrevoked smart contract approvals can be silently used by attackers even after more than a year.

In a deeply concerning development for the crypto world, this user has lost $908,551 in a long-term phishing scam that exploited an approval signed 458 days ago. This case not only highlights the dangers of crypto phishing scams but also brings attention to the importance of wallet hygiene and regular permission reviews.

What’s the Story?

The phishing attack was first brought to light by ScamSniffer on X and later confirmed through Crypto Jargon reports. The scam was not an instant attack but a long, calculated operation where the attacker waited over 15 months to strike.

Back in May 2024, the user unknowingly signed a malicious smart contract approval. This approval gave the scammer access to their wallet. The approval stayed active all this time and finally, in August 2025, the scammer used a crypto drainer to move the funds.

What makes this attack particularly alarming is that the victim did nothing wrong recently. The real damage had been done long ago when they signed the contract without realizing the risk.

Source:X

Details on the Phishing Attack

• Victim Wallet: 0x6c0eB6ef6409d7c7AF129aE9D1B5E3e9Ffb8d8aF

• Scammer Wallet: 0x67E5Ae3E1Ad16D4c020DB518f2A9943D4F73d6eF

• Total Loss: $908,551 in USDC

• Approval Date: 458 days before the wallet was drained

Source: X

What Caused the $900K Phishing Attack?

The actual cause of this incident is unrevoked token approvals. They are likely to approve smart contracts when they access decentralized applications (DApps), NFT platforms, or DeFi protocols, and want to withdraw their funds. Such authorizations are not deactivated automatically. The Loopholes in the Exploit that are the most important:

• The access to forgotten smart contracts was open for more than 15 months

• The user does not carry out regular audits of the wallet

• No security tools like Revoke.cash or Etherscan Token Approval Checker were used

ScamSniffer estimates that 70% of losses are caused due to these unrevoked approvals. Scammers are increasingly patient and exploit these weak points months or even years later.

Source: X

Why This Case Matters

This attack wasn't flashy or fast. It was slow, quiet, and effective — a strategy now gaining popularity among advanced phishing groups like Pink Drainer. The case shows that:

• Scammers don’t need to rush — they can wait months for the perfect time.

• Users often forget they’ve ever signed approvals.

• The attack could happen to anyone who interacts with DeFi or NFT ecosystems.

Final Words

These are common as recently, Mantra co-founder faces lazarus group zoom phishing attack. If you've interacted with any decentralized platforms, it's time to review your wallet approvals.

Simple Security Tips:

• To check the permissions, utilize such tools as Revoke.cash or Etherscan Token Approvals

• Cancel access to smart contracts that you do not use anymore

• Do not accept signatures of unknown or suspicious pages

• Watch out against phishing of crypto wallets

The Web3 world is a dynamic one, and a single outdated approval can take it all away. An extra 5 minutes of review today can save your entire crypto portfolio tomorrow.