Norton Safe Web Firefox

Norton Safe Web

Protects your browser from online threats.

Features & Capabilities

Norton Safe Web is a Chrome extension designed to protect your browser from online threats such as identity theft, scams, and malicious websites. It provides real-time safety information for every page you visit by querying a constantly updated Remote URL Reputation Service. This extension automatically blocks dangerous pages and downloads, enhancing your security while you search, shop, or browse online.

By using Norton Safe Web, you benefit from continuous threat intelligence to ensure a safe and secure online experience. For full terms and privacy details, users can refer to Norton's licensing agreement and privacy policy. Stay safe online with Norton Safe Web’s proactive protection features.

User Growth & Download Statistics

Manifest V2 Add-on Privacy & Security
By:
NortonLifeLock
Daily users:
353,906 -5,121
Rating:
3.93
(377)
Version:
3.23.0.29 Last updated: 2025-01-10
Version code:
5865492
Creation date:
2016-11-02
Risk:
Very high risk impact Low risk likelihood
Permissions:
Content scripts matches:
  • <all_urls>
  • *
  • *.syndicatedsearch.goog
  • *.norton.com
  • secure.norton.myway.com
Size:
3.03MB
URLs:
Privacy policy
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-06-20
Compare stats and ranking:

Other platforms

Chrome
Norton Safe Web (v3.24.0.19)
4,000,000 2.99 (338)
Edge
Norton Safe Web (v3.24.0.18)
8,005,653 3.60 (1,557)

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:
NortonLifeLock
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/norton-safe-web/

Permission Change History

2022-12-20: Version 3.18.2.9 → 3.19.0.69
Add Permissions: alarms

User Reviews

User reviews of Norton Safe Web for Firefox are predominantly negative. The core issue is frequent false positives that mislabel legitimate or safe sites as dangerous, leading to blocked pages (including sites Norton rates as Safe). Other common complaints include reliability and usability problems (blocked content, limited features, even paid ads in search results), and a lack of control to report malicious sites or override blocks. Several reviewers also note the Firefox extension appears under-updated compared with the Chromium version. A single comment simply praises it as a 'super extension'.
Pros
  • super extension.
Cons
  • Frequent false positives and mislabeling legitimate/safe sites as dangerous.
  • Blocks safe or reputable sites, including some that Norton itself rates as Safe.
  • Reliability and usability issues: it can block safe sites and sometimes doesn't work or shows limited features with ads in search results.
  • Lack of reporting controls and paywall restrictions for reporting malicious sites.
  • Firefox version appears outdated; not updated as often as Chromium.
Recent reviews
It doesn't work, the first random scam page is written by Safe.
by ni*****, 2026-01-09

by Fi*****, 2025-11-19

by Fi*****, 2025-08-11
View all user reviews ›

Is Norton Safe Web 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.

Norton Safe Web 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.
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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.

Norton Safe Web has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details
  • Low This extension was updated more than 6 months ago. Older versions are more likely to be stable and safe.
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Best Norton Safe Web Alternatives

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