Netcraft Extension

Netcraft Extension

Comprehensive site information and protection from phishing and malicious JavaScript when browsing the web

Netcraft Extension promo image
What is Netcraft Extension?

Netcraft Extension is a featured Chrome extension by This extension has 63,005 weekly active users, a good user rating of 4.50, and is most similar to Shodan and OWASP Penetration Testing Kit. The latest version, 1.16.10, was updated 2 months ago.

Stats date:
Rating: 4.50 (148)
Version: 1.16.10 (Last updated: 2023-01-13)
Creation date: 2020-04-14
Manifest version: 2
  • storage
  • tabs
  • webNavigation
  • webRequest
  • webRequestBlocking
  • <all_urls>
Size: 803.84K
Email: Click to see
Risk impact: High risk impact
Risk likelihood: Very low risk likelihood
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Netcraft Extension
Netcraft Extension (v1.16.10)
35 4,992
Not available on Edge
The Netcraft Extension is a tool allowing easy lookup of information relating to the sites you visit and providing protection from phishing and malicious JavaScript.
What's new in v1.16.10?
• Fixed compatibility with some sites
• Fixed multiple tabs opening when clicking the Site Report link
Key Features:
• Protection against phishing sites — The Netcraft anti-phishing community is effectively a giant neighbourhood watch scheme, empowering the most alert and most expert members to defend everyone within the community. As soon as the first recipients of a phishing mail report it, we can block it for all users of the extension providing an additional level of protection from Phishing. Netcraft processes reports of fraudulent URLs from a diverse variety of sources and proactively searches for new fraudulent sites.
• Protection against malicious JavaScript — Prevent your credit card details from being stolen by shopping site skimmers or your computer's processing power being harvested by web miners. Netcraft has been detecting shopping site skimmers, web miners, and other malicious JavaScript since 2017. The extension blocks sites that we have found to be compromised with malicious JavaScript. Additionally, it detects JavaScript that we have identified as being malicious, blocks pages that use it from loading, and automatically reports them to Netcraft to protect the rest of the community.
• Credential leak detection – Even if you come across a shopping site skimmer that Netcraft has not yet detected, the extension can still work to protect your card details. Credential leak detection inspects outgoing requests on the fly, blocking them if they carry your sensitive data to potentially malicious external domains. The compromised site is then blocked and reported to Netcraft.
• Detailed site reports – simply click the Netcraft logo to access a wealth of information about the sites you visit, helping you to make informed choices about their safety.
See more
Risk impact

Netcraft Extension requires a number of risky permissions that can potentially harm your browser and steal your data. Exercise caution when installing this extension. Review carefully before installing. We recommend that you only install Netcraft Extension if you trust the publisher.

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, bypass your security settings, and access your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Risk likelihood

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

Risk likelihood measures the probability that a Chrome extension may turn malicious. This is determined by the publisher and the Chrome extension reputation on Chrome Web Store, the amount of time the Chrome extension has been around, and other signals about the Chrome extension. 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 Chrome extension, especially ones with higher risk impact and/or higher risk likelihood.

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User reviews
Please update the extension more frequently as it hasn't been updated since a long time, also updating the extension more frequently is very very important in order to block new types of malicious & phising & bad websites, so please get this extension updated more frequently with monthly or weekly updates for the same

This is the best anti phishing blocking extension that I ever have even better than Macafee web advisor, Norton safe web, Bitdefender traffic light and Kaspersky.
by Dr.Siva Ramakrishna Dr.Siva Ramakrishna, 2022-10-24

My antivirus everytime I google something and this netcraft extension tries to redirect my google search: "We've safely aborted connection to because it was infected with URL:Phishing." Its a URL phisher avoid at all costs.
by jarett Pendell jarett Pendell, 2022-01-25
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