Symvek Shield: Privacy Score & Tracker Blocker Firefox

Symvek Shield: Privacy Score & Tracker Blocker

Privacy scores for every site you visit. Blocks 92,000+ trackers, rejects cookie banners, randomises your fingerprint, and catches pages that send what you typed to another company before you press submit. Zero data collected.
xHeader
Modify request and response headers. No ads, no malware.

Features & Capabilities

Shield gives every page you visit a privacy grade from A to F, blocks the trackers behind that score, and catches something no other blocker can: the moment a page sends what you just typed to another company.

WHAT SHIELD DOES

Privacy grade: an instant A to F score for every page, computed in your browser.

Tracker blocking: 92,000+ tracker domains from EasyList and EasyPrivacy.

Cookie banners: rejected automatically.

Fingerprint protection: canvas, WebGL, audio and font readings are randomised per site and per session, so the value collected differs every time.

Leak detection and blocking: Shield watches the email, phone and name fields you type into. If a page tries to send that value to a third party before you press submit, Shield tells you who received it and offers to stop that company, on this site or everywhere. The rule takes effect immediately on the page you're already looking at, and one click undoes it.

Names the script that read your field: not "a tracker is present on this page", which any blocker can say, but "this script read your email field four seconds after you typed it, and you never pressed submit". A blocker that filters by destination cannot see a read at all.

Data requests: generate an access or deletion request for any site, ready to send from your own mail client.

ZERO DATA COLLECTED

The free tier makes no network calls of its own. Open the Network Monitor and watch: Shield sends nothing, because there's nowhere for it to send anything. No account, no sign-up, no analytics, no telemetry. Everything happens in your browser and stays there.

Field contents are read on your device to notice when a page transmits them. The values are never stored and never leave your machine, and password and payment fields are never inspected.

SHIELD PREMIUM

Protection is free and stays free. Premium is the record that accumulates: every company Shield watched receive something you typed, every script that read one of your fields, across every site and month, plus a dated export you can attach to a data request. Built only from what your own browser saw.

Also included: import your Google or Meta data export to read the ad profile they admit to holding, and a guided walkthrough for resetting it.

User Growth & Download Statistics

Manifest V2 Add-on
By:
Symvek Technologies Inc.
Daily users:
1
Version:
2.3.1 Last updated: 2026-08-18
Version code:
6422817
Creation date:
2026-08-01
Firefox add-on GUID:
shield@symvek.com
Firefox add-on numeric ID:
3046901
Firefox on Android:
No
Risk:
Very high risk impact Very high risk likelihood
Permissions:
Content scripts matches:
  • <all_urls>
Size:
2.70MB
Email:
su*****@symvek.com
URLs:
Website ,Privacy policy
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-09-07
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:
Symvek Technologies Inc.
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/symvek-shield/
Email:
su*****@symvek.com
Website:
https://symvek.com

Is Symvek Shield: Privacy Score & Tracker Blocker 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.

Symvek Shield: Privacy Score & Tracker Blocker requires a lot of sensitive permissions. Exercise caution before installing.

Risk impact analysis details
  • Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
  • Critical ****** ****** ** *** ********* ****** * *********** ******** **** ** ** *** ******* *** ****** **** **** *** ******* *****
  • High ****** *** ********* ** ******* *** ******* ******* ** ****** *** *** ******** ******
  • 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.

Symvek Shield: Privacy Score & Tracker Blocker is recently added, and hasn't been around long enough for us to gather enough data to accurately assess its risk level.

Risk likelihood analysis details
  • Critical This extension matches our fingerprint for known malicious extension
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