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

CN
13 hours ago

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

You will be shocked with the attackers 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 (formerly Twitter) 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.

Scamsniffer report

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

  • Reported By: ScamSniffer, a known on-chain scam monitoring tool

The attacker did not hack the wallet in the traditional sense. Instead, they used a previously granted token approval to access and move funds without needing a new confirmation from the user.

 $900K crypto scam

Source: X

What Caused the $900K Phishing Attack?

The root cause of this incident lies in unrevoked token approvals. When users interact with decentralized apps (DApps), NFT platforms , or DeFi protocols, they often approve smart contracts to access their funds. These permissions remain active unless manually revoked.

Key Loopholes Behind the Exploit:

  • Forgotten smart contract access remained open for over 15 months

  • Lack of regular wallet audits by the user

  • No use of security tools like Revoke.cash or Etherscan Token Approval Checker

According to ScamSniffer, around 70% of phishing-related losses stem from these unrevoked approvals. Scammers are increasingly patient and exploit these weak points months or even years later.

attacker waits 458 days

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

The phishing attacks are common these days. 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:

Use tools like Revoke.cash or Etherscan Token Approvals to review permissions

Revoke access to smart contracts you don’t use anymore

Never sign approvals from unknown or shady platforms

Stay informed about scams targeting crypto wallets

In the fast-moving world of Web3, just one old approval can cost you everything. A 5-minute review today could save your entire crypto portfolio tomorrow.

Also read: Arthur Hayes Bitcoin Warning: BTC to $100K, ETH to $3K Crash

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