You know it’s bad when the scammer has more patience than your Wi-Fi on a stormy night.
In this publication, we're uncovering a slow-burning crypto scam that quietly drained nearly a million dollars — and it could happen to anyone holding tokens in a Web3 wallet. Let’s dive in.
Nearly half a million dollars gone — and the victim never saw it coming.
In one of the most chilling examples of delayed wallet theft, a crypto user lost $908,551 in USDC after approving a malicious transaction over a year ago. The attacker bided their time, waiting until the wallet was flush with funds — then drained it in minutes. The worst part? This isn't an isolated case.
How It Works:
This scam is called an “approval phishing attack.” Here's the breakdown:
- Bait Phase (April 2024): The victim is tricked into signing a malicious transaction. This doesn’t transfer any tokens yet — it just gives the scammer permission to move tokens later.
- Wait Phase (458 Days): The scammer monitors the wallet, patiently waiting for the victim to deposit a large sum — in this case, two transactions totaling over $900K in July 2025.
- Strike Phase: Once the wallet is full, the scammer executes the pre-approved transfer, stealing the entire balance. The victim sees their wallet emptied instantly.
Who’s Targeted:
This attack can target anyone with a non-custodial crypto wallet — but it's especially aimed at:
- Crypto investors who use dApps or DeFi platforms
- NFT traders who frequently sign approvals
- Users who rarely check or manage token permissions
Real-Life Example:
The victim unknowingly gave approval to a malicious contract in 2024. After nearly 15 months, the attacker drained the wallet using a well-known address: pink-drainer.eth, infamous for delayed wallet drains. This method has become a calling card among seasoned Web3 scammers.
Why You Should Care:
Approval-based scams are invisible until it’s too late. The approval transaction looks harmless. No funds move. There’s no alert. And then — one day — you wake up broke.
Once a token approval is granted, the attacker doesn't need your seed phrase to rob you. They already have the keys to that specific token — you gave it to them when you clicked “Approve.”
If you’ve ever interacted with a suspicious airdrop, sketchy NFT mint site, or “too good to be true” DEX, you might have granted a malicious approval too.
How to Protect Yourself:
Here’s what you can do today to stop a slow-drip crypto heist:
-
Check your token approvals regularly
Use tools like Etherscan Token Approval Checker or Revoke.cash to monitor and revoke permissions you no longer need. -
Don’t blindly click “Approve” on dApps or DeFi platforms
Know what you’re agreeing to. If a site asks for infinite token approval, think twice. -
Use a burner wallet for risky interactions
If you're minting from unknown sites or exploring new DeFi platforms, use a separate wallet with limited funds. -
Follow known scam trackers
Sites like Scam Sniffer and web3 security experts on X (formerly Twitter) flag suspicious dApps early. -
Enable wallet alerts
Some wallets (like Rabby or Fire) offer real-time transaction alerts and risk warnings before approvals.
Quick Tips & Updates
Quick Tip #1: Did you know? Some scam approvals are set to “infinite spend,” meaning they can drain your account again later — even after one successful attack.
Pro Tip: Bookmark and regularly check revoke.cash to clean up old permissions. Think of it as antivirus for your wallet.
In July alone, scammers stole $142 million in crypto through at least 17 separate attacks. These aren’t small-time hackers — these are organized, patient, and often AI-powered criminals.
Stay safe, stay informed.
Keywords Defined:
- Approval Phishing Attack: A scam where a user is tricked into giving token access (without knowing it), letting the attacker steal tokens later.
- USDC (USD Coin): A popular stablecoin pegged to the US dollar, widely used in crypto transactions.
- dApp: Decentralized application — an app built on a blockchain like Ethereum.
- Revoke Tool: A utility that lets users view and remove token spending permissions from their wallet.
- Pink-drainer.eth: A known scam-linked Ethereum wallet involved in high-profile phishing and drain attacks.
- Non-custodial Wallet: A crypto wallet where the user, not a third party, controls the private keys (e.g., MetaMask).
- Token Approval: A permission that allows smart contracts to transfer tokens on your behalf.
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