I got into crypto twelve years ago and one thing that always stressed me out was phishing.

Recently after the coldcard incident I’m seeing too many posts where user lost their funds to a phishing page. If you manage to block one, another one pops up.

So I built CryptoGuard a stupidly simple browser extension that works the opposite way:

Normal browsing = everything allowed.

Doing crypto = tap a timer, and only verified wallet sites load.

Timer expires = back to normal automatically.

No AI, no blocklists to maintain, no cloud service. Just a hard allowlist of official domains (Trezor, Ledger, MetaMask, Exodus, etc.) and the ability to add your own. It uses Chrome’s built-in network blocking API, so scam pages never even render not for a split second.

Why I made it this way

I didn’t want another always-on extension that breaks the internet. I only need protection when I’m *actively* managing crypto. So the default state is “do nothing” and Safe Mode is a conscious, time-limited choice.

What’s inside

5/15/30/60 minute timers (or custom) Auto-disables when done Built-in allowlist for 20+ official wallet/explorer domains Add your own sites Block counter Zero data collection (no analytics, no remote servers, no permissions to read page content)

Fully open source (MIT)

Where to get it

GitHub: https://github.com/xbtindia/cryptoguard

It’s an unpacked extension for now (load via Developer Mode). I know that’s not as convenient as the Chrome Web Store, but it means you can audit every line of code before installing it, which feels right for a security tool.

What I’d love feedback on

– What wallet sites should I add to the built-in list?

– Would you use this, or is it overkill?

PS: Stay safe out there.

submitted by /u/meremah_boob [link] [comments]r/CryptoCurrencyRead More

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