Websites
Fake logins, fake toll and parcel payments, fake stores, fake government pages.
Scam protection for your browser
Danger Stamp checks the websites, emails, chats and ads you see. When something is a scam, it stamps it, locks the form and tells you what to do instead.
Free to start · No card needed · For Google Chrome
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Checks every page you open, on sites like
Browser warnings only know scams someone already reported. Danger Stamp reads the page itself, so it catches one that went up an hour ago.
Scam forms lock the moment they're caught. Risky downloads pause. Fake virus pages get shut down.
One clear sentence says what's wrong and what to do instead. Already gave them something? It tells you what to do next.
Scams hide in your email, chats, comments and ads, not just on fake websites. Danger Stamp watches them all.
Fake logins, fake toll and parcel payments, fake stores, fake government pages.
Fake invoices with a number to call, "our bank details changed", the boss who needs gift cards.
Marketplace buyers with fake Zelle payments, romance scams, "Hi Mum, this is my new number".
Bot threads praising a fake "advisor", fake creator accounts offering prizes on Telegram.
Miracle cures, deepfake celebrity investing, fake closing-down sales, recovery scams.
Fake virus warnings, "press Windows + R" tricks, remote-control tools and fake updates.
Each scam gets its own stamp, labeled with what it is.
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This page looks just like Google, but the address isn't Google's. Scammers send links to pages like this to steal your email and password.
For years we've watched Jim Browning and Scammer Payback catch scammers in the act. What stuck with us wasn't the scammers. It was the people on the other end: a grandmother reading a fake virus warning, a dad refunding money he never got.
Most of them didn't know it was a scam until the money was gone. Nobody was there to say "stop, that's not real." And with AI, the fakes look more convincing and arrive faster than ever.
So we built Danger Stamp to be that voice. It sits in your browser and stamps the scam the moment it shows up, before you type, pay or click. The goal is simple: stop as many scams as we can, and protect the people who'd never see them coming.
The Danger Stamp team
A notification in the corner is easy to miss or wave away. The stamp lands on the page itself, on the very thing that's trying to fool you.
Not everyone is computer savvy: grandma, your kids, even some parents. So the scam's form locks before a password or card number can be typed in.
A whoosh and a thud. Not too loud, but enough to make you stop and look. You can turn it down or off.
Every stamp says what's wrong in one plain sentence. After a while you start spotting scams yourself.
Quiet on every normal page. Loud the moment it finds a scam.
A password box, a card field, a pop-up grabbing your screen, an email about a charge. Ordinary pages never leave your computer.
Clear scams get the big stamp and the form locks. Risky pages get a warning. You can always press FALSE ALARM.
One plain line on what to do instead. Already gave them something? It walks you through the next steps.
Every stamp starts with a real scam that hurt a real person. Here's what we've studied so far.
Plus every US bank and credit union, alerts from fraud agencies, and the top 50,000 real websites, so every check knows the real thing from the fake.
Check this
A message from a new number, an email you weren't expecting, a buyer who wants to pay a strange way, an offer that seems too good. Select it, right-click, and Danger Stamp tells you what it sees.
Try an example
Only what you chose is checked, with card, account and ID numbers blanked out. Nothing is kept.
Hi Mum, I dropped my phone in the toilet, this is my new number. Can you help me pay a bill today? I'll pay you back tomorrow x
"New number, can you pay this bill?" is the classic family imposter scam. Call your relative on their old number first.
Call your family member on the number you already have before you send anything.
Every answer here came from the real Danger Stamp. Already have it? Select the words above and right-click to try it yourself.
Privacy
Email and chat can be personal. That's exactly why scammers use them. Don't want them checked? Switch them off.
And on the real pages they copy, so it stamps the fakes and leaves the real thing alone.
Free gives you a heads-up. Pro takes a closer look.
You're on a paid plan.
Plans are picked inside Danger Stamp. Add it first, then press a plan here or in the extension.
Covered by a family plan.
$0
Checks on your computer, forever. Nothing you read ever leaves it. Gives you a heads-up when something might be a scam, so you can slow down.
Add Danger Stamp$4.99/ month
Takes a closer look at anything risky, even brand-new scams, and stamps the ones it finds. On this browser.
$12.99/ month
Everything in Pro, for up to 5 browsers. Add Mom, Dad and the kids with a link.
Plans are picked inside Danger Stamp. Add it first, then press a plan here or in the extension.
| Scam or feature | Free | Pro | Pro Family |
|---|---|---|---|
| Scams caught in our tests | About 1 in 8on the free, on-computer checks | Over 9 in 10 | Over 9 in 10 |
| Takes a closer look, and stamps brand-new scams | A heads-up only | Included | Included, for everyone |
| Fake virus pop-ups and "call Microsoft" lock screens | Some | ✓ | ✓ |
| "Press Windows + R and paste" tricks | Some | ✓ | ✓ |
| Remote-control programs pushed by fake support | Some | ✓ | ✓ |
| Crypto recovery-phrase grabs and wallet drainers | Some | ✓ | ✓ |
| "Click Allow" notification traps | Some | ✓ | ✓ |
| Fake login pages for banks, email and social media | Most | ✓ | ✓ |
| Fake payment pages: tolls, parcels, bills | Some | ✓ | ✓ |
| Brand-new fake sites that only look real | A few | ✓ | ✓ |
| Forged senders, picture-only emails and emails Gmail flags | ✓ | ✓ | ✓ |
| Scam emails: fake invoices, changed bank details, fake bosses | — | ✓ | ✓ |
| Scam chats: Marketplace, romance, "Hi Mum, new number" | — | ✓ | ✓ |
| Scam comments and ads on YouTube and Facebook | — | ✓ | ✓ |
| AI slop tags on X, LinkedIn and Reddit posts | — | ✓ | ✓ |
| Fake stores, investment, job and rental scams | — | ✓ | ✓ |
| Child mode: grooming and gambling sites | — | ✓ | ✓ |
| Protects up to 5 browsers, with the family list and invites | — | — | ✓ |
| FALSE ALARM button, sound control, privacy promise | ✓ | ✓ | ✓ |
The Free column is measured on our test scams with no AI, the way Free runs. Most: 60% or more. Some: 20 to 59%. A few: under 20%.
Because running the service costs money. Every decision is made by very fast AI models working from rulebooks we've researched and tested on thousands of real scams. When a page, email or message looks risky, the AI checks it against those rules, and every one of those checks costs us, even when it finds nothing.
The checks that run on your own computer cost us nothing, so they're free forever, and nothing you read ever leaves it. When something might be a scam, Free gives you a heads-up, but it can't tell a scam from a false alarm: that takes the AI reading the whole thing.
Pro pays for those AI checks and supports our work. Researching and testing new scams takes time. Criminals don't stop, and we don't want to either.
Nobody at Danger Stamp ever reads them. The extension sees what's on your screen, like your browser does, and checks it right on your computer for words and phrases that often mean a scam: a payment request, a code, a link, or a first message from someone you've never talked to. Ordinary messages never leave your computer.
On Free, nothing ever leaves your computer. On Pro, when something looks risky, a short snippet goes to our AI so it can understand the context and decide, with card, account and ID numbers blanked out first. We don't keep a copy on our servers. Our AI partner, TypeSafe, doesn't train its AI on what we send or share it with anyone except the services it runs on. Its privacy policy says it keeps data only as long as it needs to run the service.
You can switch email and chat checks off in one click.
The checks on your own computer, free forever. Nothing you read ever leaves it, and the AI is never used. They catch scams that give themselves away, like fake sign-in windows, most fake login pages, forged senders and emails Gmail itself flags. When something might be a scam but needs a closer look, Free gives you a heads-up: a small Danger warning that says what it could be. It can't tell a scam from a false alarm, because that takes the AI reading the whole thing. Pro does that and stamps the scams it finds.
Press FALSE ALARM on the red bar. You can unlock the page just this once, or tell Danger Stamp to always trust that site for that kind of warning (you can undo that any time from the extension). Telling us it got it wrong is a separate tick box, off unless you tick it.
Yes. Select the text on any page, right-click it and choose "Check this with Danger Stamp", or paste a text message, email or chat into the Danger Stamp button in your toolbar. On Free it runs the checks on your computer; on Pro the AI checks it too. Only what you chose is checked, with card, account and ID numbers blanked out, and nothing is kept.
Every warning has a "What to do" button. Tell it what you gave them, like a password, a card number, money or access to your computer, and it shows the steps to take now. It also writes a short message you can send to someone you trust. Danger Stamp never sends it for you, and it doesn't tell anyone what you were looking at.
Browser warnings only know scam sites someone has already reported. Danger Stamp reads the page itself, so it can catch a fake page that went up an hour ago, and it also looks at emails, chats, comments and ads.
Yes. Pro Family covers up to 5 browsers. You pay, send them an invite link, and they press Join on their computer. They never see a payment screen.
Google Chrome on a computer for now. Other browsers and phones aren't supported yet.
A small red-outlined tag on posts on X, LinkedIn and Reddit that read like AI-written filler. Click it to see why, or wave it away. It's a guess from the wording, so it's never a stamp, and you can turn it off.
It starts protecting you on the next page you open.
Free to start · No card needed