Netcraft Extension

Comprehensive site information and protection from phishing and malicious JavaScript when browsing the web
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The Netcraft Extension provides comprehensive protection while browsing the web. It helps users identify site details and offers robust defense against phishing attacks by leveraging a vigilant anti-phishing community that rapidly blocks fraudulent sites. Additionally, it safeguards users from malicious JavaScript such as shopping site skimmers and web miners by blocking compromised pages and auto-reporting threats.

Key features include credential leak detection that blocks sensitive data from reaching malicious domains, detailed site reports accessible with one click, and a convenient way to report suspicious sites to Netcraft. The extension ensures your online shopping and browsing remain secure by constantly updating its threat database and empowering the community to contribute to safer internet browsing. To learn more, visit https://toolbar.netcraft.com.

Manifest V3
By:
Netcraft Ltd
Daily users:
3,597+ 2
Rating:
4.43
(44)
Version:
2.1.2 Last updated: 2024-02-26
Version code:
5697197
Creation date:
2005-10-06
Risk:
Very high risk impact Low risk likelihood
Permissions:
  • storage
  • tabs
  • webNavigation
  • webRequest
  • webRequestBlocking
Host permissions:
  • <all_urls>
Size:
788.42K
Email:
su*****@netcraft.com
URLs:
Website ,Privacy policy
Full description:
See detailed description
Source:
Firefox Browser Add-ons
Updated:
a day ago

Ranking

# 1,408 ▲ 4
Other rankings
Upgrade to see more rankings

Other platforms

Netcraft Extension (v2.1.2)
60,000+ 4.44 (160)
Netcraft Phishing Protection (v1.4.0)
36,644+ 4.07 (214)
Netcraft Extension (v2.1.2)
21,510+ 4.30 (9)

User reviews

Netcraft Extension is praised for its accurate detection of unsafe websites and detailed site information, making it a valuable tool for web safety. It updates quickly in response to emerging threats and user reports without impacting performance. While some users report occasional issues with the site info display refreshing rapidly, overall it is considered a reliable, well-maintained extension endorsed by its user community.
Pros
  • Effectively identifies malicious or unsafe websites with high accuracy.
  • Provides detailed information about websites, including age, risk rating, and malware presence.
  • Quick and responsive updates to new threats and user reports.
  • Lightweight and does not slow down or lock up the browser or computer.
  • Long-standing, well-maintained extension with community endorsement.
Cons
  • Some users note that site information in the extension may refresh or blink constantly, which can be distracting.
  • Does not recognize all newly emerging threats perfectly, with some malicious links not immediately detected.
Recent reviews
by Firefox user 18910596, 2025-03-29
by Firefox user 13981225, 2025-03-08
Nice
by Firefox user 18858534, 2025-03-01
View all user reviews ›

Extension safety

Risk impact

Netcraft Extension 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

Netcraft Extension has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details
  • High This extension has low user count. Unpopular extensions may not be stable or safe.
  • Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
  • Good **** ********* *** **** **** *******
Upgrade to see full risk analysis details

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