You Think You're Logging In. You're Actually Granting Permission.
Logging into a website and connecting a wallet in Web3 look almost identical. You click a button, a window appears, you confirm, and it's done. The interface makes both actions feel like the same kind of thing, but they are fundamentally different in nature and consequence.
A traditional login is an identity check. You tell the system who you are, and it lets you in. That process has nothing to do with your assets and grants no one the ability to take action on your behalf. Your password verifies your identity, nothing more.
When you click "Connect Wallet" in Web3, you are not identifying yourself to the other party. You are establishing a connection that allows a website or protocol to see your wallet address, your asset balances, and in some cases, to submit transaction requests to you. That connection is not itself an authorization, but it is the entry point to one.
The actual authorization happens when you sign a transaction. The first time you interact with a token inside a DeFi protocol, the system asks you to approve a smart contract, granting it permission to move that token on your behalf. That approval is not a one-time confirmation. It is a standing permission. You are not saying "this time is fine." You are saying "anytime is fine."
Because the interfaces for transactions and approvals look so similar, most users cannot tell them apart at a glance. The visual experience is nearly identical, but what follows can be entirely different.
On August 2, 2025, a case documented on-chain circulated widely in the crypto community. A user lost over $900,000 in USDC without any warning. The money was not stolen that day. The malicious approval had been signed 458 days earlier, on April 30, 2024. The attacker did not act immediately. They waited, monitoring the wallet patiently, until the balance grew large enough to be worth draining. Nothing the user did during those 458 days changed anything, because the authorization had been sitting there for over a year.
This is not meant to suggest that every approval carries this kind of risk. Most users interacting with legitimate protocols will never encounter this. The issue is that at the moment you grant an approval, you cannot know whether that protocol will remain safe over time. The longer the approval sits, the more that uncertainty compounds.
When you swap 100 USDC for ETH, that transaction completes and ends. An approval, once given, remains valid indefinitely until you manually revoke it. You can leave the site, stop using the protocol, forget it existed entirely, and the approval stays in place. If that protocol is ever compromised, the attacker can use the permission you granted whenever it suits them.
The problem with Web3 interface design is that it does not clearly distinguish between three different things: connecting a wallet, signing a transaction, and granting an approval. All three look similar on screen, but they are different in kind. Connecting a wallet lets someone see you. Signing a transaction completes a specific action. Granting an approval hands over a key that stays active until you take it back.
Understanding that distinction is where protecting yourself in Web3 begins. Before you click confirm on anything, it is worth pausing to consider what you are actually agreeing to.
Your wallet approvals are visible. ZenRealm's Wallet Permission Check tool lays out every active approval currently associated with your wallet address. Enter your address and the full list of active approvals across major EVM networks will appear. How many confirmation windows you have clicked through over time is worth finding out for yourself.
Related Reading:
How Many Token Approvals Have You Forgotten About?