ScamGuard
Simple protection from scam, phishing, and fake websites.
ScamGuard is a free, open-source Chrome extension made to help people stay safer online. It checks the site you are visiting, warns you about risky domains, and lets the community help review what is safe and what is not.
Search for any domain to view community notes and vote from the website.
How It Works
ScamGuard is meant to feel quiet, simple, and easy to understand.
1
You browse like normal
Install the extension and use the web as you normally would. There is nothing to learn and nothing to manage.
2
You get a clear warning
If a domain looks risky or has been reported by other people, ScamGuard warns you before you trust it.
3
People help keep it accurate
Users can report scam sites and vouch for real ones. Over time, that helps domain status stay useful and fair.
Why People Can Trust ScamGuard
🔓 Open Source
The extension, website, and server code are open source. Anyone can inspect how it works.
🤖 Harder to Abuse
Votes are protected by bot checks, verified email, and limits on brand-new accounts.
🗳️ Not Controlled by One Person
No single person decides what gets blocked. Domain status depends on community voting and review.
🔍 Lookalike Detection
ScamGuard can spot domains trying to imitate well-known brands, like lookalike login pages.
🔒 Privacy First
It checks the domain, not your browsing history, page content, or personal activity.
⚖️ Fair Review
If a good site is flagged by mistake, people can vouch for it and its status can change.
How We Keep Voting Fair
Community tools only help if people cannot easily game them. ScamGuard uses several checks to make abuse harder.
Cloudflare Turnstile
Each vote goes through a bot check before it is accepted.
Email verification
You must verify your email before casting any vote.
Account age gate
New accounts must wait before voting, which helps slow down throwaway signups.
Disposable email blocker
Temporary email services are blocked.
Email normalization
Common email alias tricks are detected to reduce duplicate voting.
Qualified voters
People with more voting history can carry more weight over time.
Threshold-based blocking
A domain is not blocked because of one person. It takes enough separate reports.
How Domain Status Works
These are simple status labels. A domain can move between them as new votes and information come in.
Reported
Caution
People have flagged the domain, so it should be treated carefully.
Blocked
Dangerous
Enough separate reports marked the domain as dangerous.
Trusted
Likely Safe
Community votes suggest the domain is likely safe.
Verified
Strongest Safe Signal
This is the strongest safe status, based on a longer and stronger history.
Learn More
If you want more detail, these pages explain ScamGuard in plain language.
How it works
A simple explanation of what happens when ScamGuard checks a site.
What it does
What ScamGuard can help with, and what it does not try to do.
How to use it
A short guide for everyday use, warnings, and community voting.
View the code
See the GitHub repository, report issues, or inspect how it works.
If ScamGuard helps you avoid one bad site, it has done something worthwhile.