Get a warning before you sign.
Most stolen crypto is lost in one moment: a recovery phrase typed into a fake site, an approval signed for a drainer, an address swapped on the clipboard. ChainWatch Guard warns you at that moment, in plain English, and makes Cancel the easy choice.
Guard is in final testing and will be free on the Chrome Web Store soon.
WHAT GUARD WARNS YOU ABOUT
Recovery phrase on a website
Typing or pasting 12 to 24 recovery words into any web page, including fake "validate your wallet" forms that split them into boxes. Private keys too.
Risky approvals and permits
Unlimited token approvals, "approve all" for NFTs, and free "permit" signatures that let someone move your tokens later.
Swapped and lookalike addresses
An address that changed between copy and paste, or one that starts and ends like an address you have used but isn't it.
Typos and wrong networks
An address with a typo, a TRON address on an ERC20 withdrawal, a test-network address, or sending to a burn address.
Signing what you can't read
Blind signing, "sign to verify" NFT listings for almost nothing, and sign-in messages that are really unreadable codes.
Losing control of your account
Requests that hand your account to contract code, change the owners of a multisig wallet, or change who controls a TRON account.
WHAT A WARNING LOOKS LIKE
Real warnings from Guard, captured on our test pages. Swipe or use the arrows to see all 11.
Recovery phrase. A recovery phrase typed into a website is caught before the site receives it.
Unlimited approval. An unlimited token approval is stopped before your wallet sees it.
Gasless permit. A free "permit" signature that would let someone take your tokens later.
Free NFT listing. A "sign to verify" trick that would give your NFTs away for almost nothing.
NFT approve-all. Permission to take every NFT you own in a collection.
Account delegation. A request to hand your whole account to contract code.
Hidden signature. A "sign-in" message that is really an unreadable code.
Lookalike address. An address that starts and ends like one you sent to: the address-poisoning scam.
Clipboard swap. The address changed between copy and paste.
Wrong network. A TRON address pasted into an ERC20 withdrawal.
TRON takeover. A request to take control of a TRON account.
1 / 11
HOW IT WORKS
Checks happen on your computer
Guard reads what you paste and what websites ask your wallet to sign, right inside your browser. No lookups, no tracking, no account.
You see it in plain English
Each warning says what was found and why it matters, with a link to the ChainWatch guide on that scam.
Risky prompts default to Cancel
A stray click or Enter key can’t approve. Cancel is the big button; "Continue anyway" is there when you're sure. Nothing is blocked silently.
QUESTIONS
When can I get it?
Guard is in final testing with real wallets on test networks. It will be free on the Chrome Web Store soon, and the button at the top of this page will take you there. Until then, our free address checker and scam guides are available now.
Is it really free?
Yes. Guard is free, with no account and no upgrade. ChainWatch makes it to help people avoid losses in the first place.
Does ChainWatch see what I do?
No. Guard makes no network requests at all, so nothing you type, paste or sign reaches us. See the privacy policy.
Which browsers and wallets does it work with?
Chrome and other Chromium browsers that install from the Chrome Web Store, such as Edge and Brave. It checks requests from browser wallets for Ethereum-style networks (Ethereum, BNB Chain, Polygon, Base, Arbitrum and others) and from TronLink. It also checks Bitcoin, TRON and 0x addresses you paste into any website.
Will it slow down everyday use?
No. Ordinary sends and sign-ins pass straight through. The first time you send to a new address you'll see a small note in the corner, which you can ignore.
What can't it catch?
Guard only sees what happens in your browser. It can't see copies made in a desktop app, and it can't catch every scam; a website built to get around extensions may avoid some checks. Always read your wallet's own confirmation screen too.
Already lost funds?
Stolen crypto can often be traced. Start with our step-by-step guide, or ask ChainWatch to analyze your case.
THE FIRST 72 HOURS REQUEST A CASE REVIEWDisclaimer. ChainWatch Guard is provided free, for general information only, "as is", without warranties of any kind. It can't catch every scam, and the absence of a warning does not mean a website, address or transaction is safe. It is not financial, investment or legal advice.