Why revoking matters
Every approval you have ever granted stays active until revoked. A project that gets hacked later can have its approved permissions abused against you.
How to check
Use a reputable approval-checker to list active approvals on your address across chains. Look for unlimited amounts and contracts you no longer recognize.
How to revoke
Revoke anything unnecessary, unlimited, or unfamiliar. It costs a small gas fee but closes standing risk. Make it a habit — review approvals every few weeks, especially after using new dapps.