NEWBIES

Your Wallet Isn't the Problem — Your Approvals Are: How to Stop a Drain Before It Starts

A wallet connection can hand a stranger permission to empty it. Here's how approvals work and how to revoke them before a drain happens.

· 6 min read · Blackhat Empire

The Scam Doesn't Need Your Seed Phrase

Most beginners think a wallet gets drained because someone stole the seed phrase. That happens. But the more common, quieter attack is simpler: you sign a permission, and the permission does the work.

This is called an approval drain. No password, no seed phrase, no 12-word backup. Just a signature you clicked while you were busy watching a chart.

The good news: once you understand how approvals work, most of these attacks stop working on you. Not because you're lucky, but because you're paying attention.

What an Approval Actually Is

When you connect a wallet to a site or use a token for the first time, you're often asked to approve it. That approval is a smart contract permission. It says: "this contract may move up to X of this token from my wallet."

There are three flavors you'll run into:

  • Connect — the site sees your address and balance. Annoying, not dangerous on its own.
  • Approve (limited) — the contract can move a specific amount of one token. Standard, mostly fine if you trust the contract.
  • Approve (unlimited) — the contract can move all of that token, forever, until you revoke it. This is the one that gets people.

A drainer doesn't need to steal anything. It just needs you to sign one unlimited approval to a contract nobody has audited. Then it waits — a day, a week, a month — and moves everything.

The Four Habits That Stop Most Drains

1. Use a burner wallet for new stuff. Keep your main wallet for assets you care about. Make a second wallet for connecting to anything unfamiliar — new launchpads, random claim pages, "free mint" links from Telegram. If the burner gets drained, you lose what you put in it, not your whole stack.

2. Read the approval, not the website. The website can say anything. The wallet popup is the truth. If you're asked to approve an amount, check whether it's a specific number or unlimited. If you only need to move 500 tokens, there is no reason to approve 10,000,000.

3. Treat every signature like a password. A signature can be a permission. If a popup says "sign to verify" but the details are unreadable, close it. If the site pressures you — countdown timers, "wallet at risk, act now" — that pressure is the tell. Legitimate tools don't need you panicking.

4. Revoke what you don't use. Approvals don't expire. Old ones from months ago are still live. Every few weeks, go through your active approvals and revoke anything you don't recognize or no longer need. Most wallet interfaces and block explorers give you a revoke option. It costs a small gas fee, and it's the cheapest insurance you'll ever buy.

Where Begineers Get Hit

Drains usually arrive through the same doors:

  • A link posted in a group chat that claims to be a "snapshot" or "airdrop claim."
  • A fake version of a tool you already use, with a slightly different URL.
  • A token page with a "connect to see your allocation" prompt.
  • A DM from someone offering to "help" you with a wallet issue.

The pattern is always the same: urgency plus a signature request. Slow down at that exact moment. That's the whole skill.

Don't Trust the Chart Alone

When you're researching a token, the chart on GMGN tells you price and flow. It does not tell you whether the contract behind the token is safe to approve. Those are two separate checks, and beginners skip the second one.

Before you connect to anything new, confirm what you're approving. If the contract is unverified or the site is a day old, use a burner or walk away. There is no token worth your main wallet.

A Note on Community

Groups are useful for information, but they are not a security check. If someone in a chat sends you a link and tells you to connect fast, that's not a signal — that's the setup. Our public groups live in the current directory at blackhat.finance/channels.html, and you can add the whole folder at once here: t.me/addlist/T9xgXQ7WXcYzZjA8. Chat happens in BH GMGN CHAT (@gmgnx_chat), with chain groups for SOLANA (@gmgnx_solana), BSC (@gmgnx_bsc), ROBINHOOD (@gmgnx_robin), and BASE (@gmgnx_base).

For alert flow, the MAIN channels are grouped by chain on the directory page. Use them to watch, not to obey. Nobody in any channel will ever need your seed phrase or a signature to "verify" you.

The Bottom Line

Memecoins are extremely high risk and most go to zero. Approval drains are a separate risk on top of that, and unlike a bad trade, they can take everything at once.

  • Use a burner for anything new.
  • Read the approval amount.
  • Revoke old approvals regularly.
  • Slow down when someone tells you to hurry.

That's not paranoia. That's just knowing what you signed. For the terminology behind approvals and contract risk, see the metrics reference. For how we handle alerts and what they are not, see alerts. And for the rules we hold ourselves to, see rules.

This is education, not financial advice. Protect the wallet first — the trades come after.

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Charts and on-chain research: https://gmgn.uk.