Free Browser Extension

Not every website
plays fair.

Some websites try to steal your data, trick you into running commands, or track you across the web. Most of the time, there's no way to tell. Browser Protect spots these threats and shuts them down before they reach you.

No account needed. No data collected. Just protection.

Your browser is your front door to the internet.
Not every website on the other side is safe.

You don't have to download anything sketchy or click a bad link. Just visiting the wrong page is enough. Websites can run attacks right in your browser without showing any visible signs.

Your computer has a critical error! Press Win+R and paste this command to fix it...
Blocked

Stops websites from tricking you

You land on a page and suddenly there's an error message, a CAPTCHA, or an urgent pop-up telling you to run a command. It looks real. Even experienced users get caught off guard.

We detect these tricks and block them before they can do anything.

You copied: meeting notes.docx
Site replaced it with: powershell -enc aQBlAHgA...
Blocked

Keeps your clipboard safe

You copy a link or some text, and a website swaps it out for a dangerous command while you're not looking. You paste, and you've just run something you never intended to.

We catch the swap the moment it happens and replace it with a safe warning.

Screen size
Graphics card
Installed fonts
CPU cores
Audio output
Detected

Alerts you when websites try to identify you

Websites don't need cookies to track you. They can read your screen size, graphics card, installed fonts, and other hardware details to build a profile that follows you around the web. All of this happens without you noticing.

We detect when a site is fingerprinting your browser and show you exactly what it's doing.

Scanning for wallets...
MetaMask Phantom Coinbase
Blocked

Protects your crypto wallet

Certain websites scan your browser for crypto wallet extensions like MetaMask or Phantom. They show fake forms asking for your seed phrase or private key. If you enter it, they take everything.

We spot wallet scans and fake key entry forms, and let you know right away.

Site wants your location
Real: 47.39°N, 8.50°E
Sent: 0.00°N, 0.00°E
Spoofed

Hides your real location

When a website asks for your geolocation, it gets your real coordinates. Your city, your neighbourhood, sometimes your street. Once shared, you can't take it back.

We intercept every geolocation request and feed the site fake coordinates instead. Your real location never leaves your browser.

Probing extensions...
Password Mgr VPN Ad Blocker
Detected

Stops extension snooping

Websites can probe your browser to find out which extensions you have installed. Your password manager, VPN, ad blocker. That list becomes a fingerprint and tells attackers exactly what to target.

We detect these probes and alert you before the site can map out your installed tools.

How does it work?

Three words:

Install.

One click from the Chrome Web Store. Works on Edge, Brave, and Opera too.

Browse.

Go anywhere. It works in the background.

Done.

You're protected. Nothing else to do.

See it in action

This is a ClickFix attack. Fake CAPTCHAs trick you into running a command you never wrote. It's one of the most common attack methods on the web today.

1
The trick
I am not a robot
1. Press Win + R 2. Press Ctrl + V 3. Press Enter
Hidden in your clipboard: powershell -w hidden -enc aQBlAHgA...
2
Browser Protect
writeText execCommand copy event
36 pattern scan
powershell -w hidden -enc
CRITICAL
3
Response
Clipboard blocked
Page JS killed
Guarded for 15s
[ZeroExfil] Malicious command blocked!

That's just one layer.

Browser Protect also watches for these threats:

Clipboard hijacking

Websites that swap your copied text with dangerous commands get caught and blocked instantly.

Browser fingerprinting

Sites that collect your hardware details to track you without cookies are detected and flagged.

Crypto wallet scans

Pages that probe for MetaMask, Phantom, or other wallets to steal your keys are stopped.

Location spoofing

Sites that request your geolocation receive fake coordinates. Your real location stays private.

Extension enumeration

Sites that scan for your installed extensions to fingerprint or target you are detected and flagged.

We collect nothing.

No browsing history. No personal info. No clipboard content. Nothing leaves your device.

We phone home never.

Zero network requests. No servers. No analytics. No third-party code. Everything runs locally in your browser.

We charge nothing.

No premium version. No upsells. No trial period. It's a free community tool, plain and simple.

We hide nothing.

The source code is open. Read every line if you want.

Built by the team behind

ZeroExfil is the data-centric EDR built by Olsson Security. We made Browser Protect as a free community tool because we think safe browsing shouldn't be limited to enterprise customers.

Start browsing safer in two seconds.

Click the button. That's it. No sign-ups, no configuration, no catch.

Install - It's Free