Sources: editorial review + provider documentation · Independent, no pay-for-placement
3 steps · just the answer
Fast path
15 min read · Advanced-safe · recommended default
1Create a separate wallet for new/untrusted apps.
2Approve only the amount you need, never unlimited.
3Revoke old approvals every few weeks.
Avoid these · common mistakes
Connecting your main high-value wallet to every new app you want to try
Granting unlimited token approvals without understanding what that permission means
Clicking wallet-connect links from social media or DMs without verifying the URL
Never revoking old approvals from apps you no longer use
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Frequently asked
What is a token approval and why is it risky?
A token approval grants a smart contract permission to move a specific token from your wallet. If the contract is malicious or gets compromised, it can drain the approved token up to the approved amount. Unlimited approvals are especially dangerous.
How do I revoke a token approval?
Use a tool like Revoke.cash, Etherscan token approval checker, or your wallet built-in approval manager. Revoking costs a small gas fee but removes the contract permission to move your tokens.
Is it safe to connect my wallet to a DEX?
Connecting to a reputable DEX through its official URL is generally safe. The risk increases with token approvals you grant during swaps. Use limited approvals and revoke them after you are done if the app is unfamiliar.
Should I use a hardware wallet for web3 apps?
A hardware wallet adds a physical confirmation step that protects against some attacks. However, it does not protect against signing a malicious transaction you approved. Understanding what you sign matters more than the wallet type.
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