ShieldSign Firefox

ShieldSign

**Protect your passwords at a glance.** ShieldSign displays a trust banner on your real login pages to make phishing instantly visible. Free, open-source, no data leaves your browser.

Features & Capabilities

🛡️ ShieldSign — The simplest way to know where you can enter your password

Knowing if a login page is real or fake should be obvious. Today, it's no longer the case: phishing pages have become indistinguishable to the naked eye.

ShieldSign solves this problem. The extension automatically validates safe login pages and displays a clear, visible banner that's impossible to imitate. If ShieldSign doesn't confirm the page, don't type your password.

🎯 Why is this really useful?

Because today we get tricked not by carelessness, but because a fake site can be perfectly identical to the real one. The only important question becomes:

👉 "Can I type my password here?"

With ShieldSign, the answer is visual, immediate and reliable.

✨ What ShieldSign does for you

✔️ Automatically identifies login pages

As soon as a site contains a password field, ShieldSign checks the domain.

✔️ Displays an impossible to imitate validation banner

3 security modes:

  • Discreet badge
  • Personal keyword known only to you
  • Random code changing with each visit (recommended)
An attacker cannot reproduce this code or keyword. Even a perfect copy of the page will be unmasked in a second.

✔️ Works with lists: community, personal, enterprise

  • A community list of trusted domains
  • Your own favorite domains
  • Enterprise option: a list pushed by your organization, to secure internal access
✔️ Automatically adds your legitimate sites

Every time you log in to a new site, ShieldSign can offer to save it. You have nothing to manage: the extension learns with you.

✔️ 100% local, 100% private

  • No data sent to a server.
  • No tracking.
  • The list of sites you use stays in your browser, only as URLs.

🔒 Why is it safer than an HTTPS padlock?

Because all modern phishing sites also have a padlock. Because "looking at the URL" is no longer realistic: tired, rushed, stressed... humans get tricked.

ShieldSign gives you an external visual marker, safe, constant, reliable.

You no longer wonder:

"Is this the right site?" You simply look: Is the banner there? Then it's good.

🎨 Simple, customizable, designed for everyday use

  • Customizable colors or gradients
  • Multiple fonts
  • Discreet badge or visible banner
  • Automatic updates
  • Clean, clear interface, no ads

🏢 For businesses

ShieldSign allows organizations to:

  • push their official list of internal domains
  • drastically reduce the risk of targeted phishing
  • without backend, without cost, without infrastructure
  • open-source and auditable

🧭 Why choose ShieldSign?

Because it's:

  • Free
  • Open-source
  • Privacy-respecting
  • Reliable
  • Designed for humans, not just experts
ShieldSign doesn't replace your vigilance, but it removes uncertainty — which is precisely what attackers are looking for.

You'll finally know where you can enter your password, stress-free.

BULLET POINTS ("Features")

  • Automatic detection of login pages
  • Impossible to imitate validation banner
  • 3 security modes: badge, keyword, random code
  • Community lists + personal list
  • Enterprise mode (managed lists)
  • Automatic addition of your sites
  • No data transmitted – 100% local
  • Open-source and free
  • Full customization: colors, font, banner style
  • Automatic updates of remote lists

User Growth & Download Statistics

Manifest V2 Add-on
By:
SingeQuantique
Daily users:
1
Version:
1.2.5 Last updated: 2025-12-16
Version code:
6099886
Creation date:
2025-11-16
Risk:
High risk impact Moderate risk likelihood
Permissions:
Content scripts matches:
  • <all_urls>
Size:
3.89MB
Email:
si*****@proton.me
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-06-18
Compare stats and ranking:

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
Developed by:
SingeQuantique
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/shieldsign/
Email:
si*****@proton.me

Is ShieldSign Safe?

Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

ShieldSign requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details
  • Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
  • High ****** *** ********* ** ******* *** ******* ******* ** ****** *** *** ******** ******
  • High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

ShieldSign is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details
  • High This extension has low user count. Unpopular extensions may not be stable or safe.
  • Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
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