“What happens when you approve a contract in your wallet? The hidden risk of the ‘Approve’ button”
Many users sign transactions in their wallets without really knowing what they are authorizing. Especially when interacting with DeFi platforms, memecoins, or new dApps.
But beware: that simple click on “Approve” can cost you all your tokens if you don't understand what's happening.
What is a token approval?
When you do "approve" from your wallet (MetaMask, Trust Wallet, etc.), you are granting permission to a smart contract to move your tokens. It is necessary to use decentralized exchanges (DEX), do staking, or interact with NFTs.
But here’s the trick: many contracts ask for unlimited approval, which means they could move your entire balance of that token if they wanted to (or if they are malicious).
Real example: how tokens are stolen
You visit a suspicious website.
You connect your wallet.
You accept an approval without reviewing.
The contract has unlimited access to your USDT, BNB, or any other token.
Days later… you see your wallet empty.
How to protect yourself?
Always check permissions before signing.
Use tools like revoke.cash or Debank to revoke old accesses.
Avoid granting “unlimited” approvals. Some dApps allow you to modify the amount.
Do not sign on unknown sites or those that come to you via private messages.
Conclusion
Signing a transaction is not just “accepting”. It is giving up control.
Understanding what you approve is an essential part of your security in Web3.
Click… but with knowledge.
