When a channel asks you to connect your wallet

What makes this instruction different from every other one in the feed?

The feed is a routine. Entry, stop, two targets, a screenshot of yesterday's result, a note about the London session. You have followed it for weeks, and every action it asks for happens inside your own exchange account, where the worst case is a trade that goes against you.

Then a message arrives with a link. Claim the member airdrop. Connect to the trading dashboard so the calls execute automatically. Verify your wallet to keep VIP access. Allocation closes in an hour.

That is not an order. It is a permission, granted on a chain, to a piece of code you have not read. And it is the only instruction in the whole feed where one confirmation can take funds the channel was never trusted with in the first place. A bad call costs you what you chose to risk. A bad approval costs you what the token contract allows the other side to take.

Three separate things get bundled into the phrase "connect your wallet", and the differences are the entire subject of this article.

What does connecting actually give away?

Less than people fear, and more than they expect.

Connecting hands over your public address and, through it, your balances and your whole transaction history. All of that is public anyway, but it was not previously tied to a visit from you. MetaMask describes disconnecting as cancelling permission for it to see your public address and your token balances, which is the same list read backwards.

It also lets the site propose. Nothing moves because you connected: a site can put a request in front of you, and only your confirmation executes it. That is the safety, and it is also where the design leans on you, because the confirmation screen is the last line of defence and it usually gets about two seconds.

The practical consequence of connecting is targeting. A site that knows which tokens you hold, and in what size, can ask for exactly the one worth asking for, in the way most likely to be confirmed.

When is a signature harmless, and when is it a permission?

A signature can be a receipt, or it can be a key. The wallet screen for both looks similar enough that the standards themselves treat this as the core problem.

EIP-712, the standard for typed structured data, states in its motivation that "Currently signed messages are an opaque hex string displayed to the user with little context about the items that make up the message" (eips.ethereum.org). The whole standard exists so that a wallet can show a person what a message means instead of a wall of hex.

The permission-shaped signature has its own standard. EIP-2612 adds a permit function "which allows users to modify the allowance mapping using a signed message, instead of through msg.sender" (eips.ethereum.org). In plain terms: a signature that costs no gas and produces no transaction of your own can grant the same spending permission that an on-chain approval grants.

MetaMask's help centre describes the attack built on this directly. It defines signature phishing as a method "where attackers obtain an off-chain signature from users, and then use it later to steal their assets", and it describes the misdirection: "The dapp will be misleading: the user will likely be told by the dapp that they're signing a message with a completely different function. For example, they may think they are signing to deposit tokens, or list an NFT. In reality, and since transaction data is so rarely readable by humans, they may be inadvertently handing over an unlimited token approval, or allowing all their NFTs to be listed" (MetaMask Help Center). Of the Permit2 approval contract the same page adds: "Once the user has signed, dapps that support the permit2 method can use the signature to transfer tokens relatively freely."

Two things follow. The site's description of what you are signing carries no weight, because the site is the party asking. And because the signature is off-chain, it does not appear in your address's transaction history the way an approval does. There is often nothing to find later that would remind you the moment happened.

What is a token approval, and why does it outlive the tab?

Because that is precisely what the standard was written to do.

The ERC-20 standard defines approve as a function that "Allows _spender to withdraw from your account multiple times, up to the _value amount", and allowance as one that "Returns the amount which _spender is still allowed to withdraw from _owner" (eips.ethereum.org). Read those two sentences as a pair. Multiple times, up to an amount, still allowed. There is no expiry in that design, no session, and no connection to the browser tab you granted it in. The standard even warns implementers about the mechanism's sharp edge, advising that clients "SHOULD make sure to create user interfaces in such a way that they set the allowance first to 0 before setting it to another value for the same spender."

This is why an unlimited approval deserves to be treated as a decision rather than a formality. Sites request a very large or unlimited cap so that you never have to approve again, which is a genuine convenience and also a standing permission over your entire balance of that token, held by a contract, for as long as the balance exists. Some wallets let you edit the number before confirming; MetaMask documents a spending cap field where you enter your own limit instead of accepting the amount the site proposed.

Other chains have their own version of the same idea rather than the same mechanism. On Solana, a token account can be given a delegate, and the Solana documentation states that "Revoking a delegate clears the token account's current delegate and resets the delegated amount to zero" (solana.com). Different instruction, same shape: an authority granted once, standing until it is cleared.

Two caveats belong on every sentence above. Behaviour differs between chains, and between wallets on the same chain. Wallet interfaces are also rewritten constantly, so a screenshot in a guide written last year may not match the screen in front of you. The mechanics in the standards are stable; the buttons are not.

Why does this request land in a signal feed specifically?

Because the feed has already trained the two things the request needs.

The first is compliance. The relationship is instruction and execution — someone posts, you act, quickly, without a discussion. A link that says "connect to the dashboard" arrives in that groove and does not feel like a different category of thing.

The second is urgency. Entries expire, so a deadline is native vocabulary in a signal channel and raises no alarm. An hour to claim an allocation reads like normal operational tempo rather than like pressure.

Add one more feature: the message being in the right place proves nothing about who sent it. It can come from an account styled to look like the channel, from a duplicate group, or from an admin account that is no longer under its owner's control. Adjacent patterns are worth recognising for the same reason — the admin who DMs you first is this request arriving privately instead of publicly.

For scale rather than for prediction: Chainalysis, on a page dated June 2026, reports that its Operation Spincaster sprints, launched in 2024 against approval phishing, worked leads connected to roughly $162 million in losses (chainalysis.com) — an industry aggregate across every kind of victim, not a measurement of signal followers.

What can be undone, and what cannot?

This is the part worth memorising, because the three layers fail in three different ways.

• A signature cannot be un-signed. It is a piece of data held by whoever collected it. Whether it can still be used depends on what it authorised and whether the underlying permission still exists, which is why the response to a suspect signature is to go and look at your approvals, not to close the tab.
• An approval can be revoked, until it is used. Revocation is itself an on-chain action. MetaMask puts the cost plainly: "Since token approvals are conducted on-chain, revoking the approval must also be on-chain. This means you need to pay gas fees for each revocation" (MetaMask Help Center).
• A transfer is final. No layer above it matters once tokens have moved, and there is no support desk on a chain.

One correction that costs nothing to learn: disconnecting a site is not revoking its approvals. Disconnecting withdraws the site's view of your address. The allowance you granted is a separate fact recorded on the chain, and it stays exactly where it was.

How do you read a confirmation screen without slowing your life down?

Five questions, and they take longer to describe than to run.

1. Which network is this on? A request on a chain you were not expecting is reason enough to stop.
2. What domain does the wallet say is asking? Read it from the wallet, not from the text of the link you clicked.
3. Is this a message or a transaction? A message signature that involves a token, a spender and an amount is not a login.
4. If it is an approval: who is the spender, and what is the cap? An address you cannot identify plus an unlimited amount is the combination that empties accounts.
5. Does the wallet admit it cannot decode this? Unreadable means unknown. Unknown is a rejection.

Rejecting costs nothing. That asymmetry — free to decline, irreversible to confirm — is why the message carries a deadline.

Which wallet should be the one that follows links?

Not the one holding the balance.

Keeping a small wallet for interacting with sites and a separate one for holding is the single change that converts a catastrophic outcome into an annoying one, because an approval can only reach the tokens in the address that granted it. If you are unclear on why one address cannot reach another, or on what a seed phrase actually controls, start with crypto wallets explained.

Note also what this article is not about. Exchange accounts, withdrawal permissions and trading bots are a different failure mode with different defences — those live in custody when you copy trade and in API keys and account security. A wallet approval and an API key are both permissions you grant, and reviewing one tells you nothing about the other.

How often should approvals be looked at?

On a schedule, not after an incident.

Block explorers publish approval tools — Etherscan's token approvals page lists the contracts approved to spend a given address's tokens and lets you revoke from the same screen — and several wallets now show a similar list natively. Solana's revoke instruction does the equivalent job for delegated token accounts. All of them cost a network fee per revocation, and all of them work only while there is still a balance to protect.

Pick an interval you will keep. Once a quarter, plus any session where you connected to something new, keeps the list short. The value of the habit is that it turns an emergency procedure into maintenance, and maintenance is performed calmly, which is the state in which people read confirmation screens properly.

What is actually in your control here?

Not whether the market moves. Not whether the channel's next call works. Those were never yours.

What is yours is the small set of decisions around a link: which wallet is open, whether you read the request or the sales copy describing it, whether an unlimited cap gets a moment's thought, and whether the standing permissions on your address are a list you have looked at this quarter. A follower who loses on a trade lost on the thing they signed up for. A follower who loses on an approval lost on the one instruction in the feed that was never about trading at all.