Level 63
Comprehensive site information and phishing protection when browsing the web
The Netcraft Extension is a tool allowing easy lookup of information relating to the sites you visit and providing protection from Phishing.

Key Features:

• 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 integrity.

• Risk Ratings – we evaluate the characteristics of the site and compare these against those depicted by fraudulent sites. The result is a simple visual summary displayed on the site report.

• 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.

• Protection against cross site scripting (XSS) – The extension optionally traps XSS and other suspicious URLs which contain characters with no purpose other than to deceive.

• Conveniently report suspected phishing & fraudulent sites – At the click of the button you can report suspected web forgeries to Netcraft, helping to protect the community. Netcraft operates an incentive scheme for Phishing site submissions, including iPads, backpacks, mugs, and more…

• PFS indicator – check if sites using SSL for encryption support Perfect Forward Secrecy (PFS). PFS ensures that if the private key of the site is compromised – for example by a court order, social engineering, an attack against the site, or cryptanalysis – your historical encrypted traffic is still safe.

Find out more about the Extension, including detailed tutorials, FAQs, phishing statistics, and how to protect yourself from online fraud at:

About Netcraft:

Netcraft is an Internet services company based in Bath, England. We provide a range of services relating to internet data analysis, defences against fraud and phishing, web application security testing, and automated network scanning. In particular, Netcraft’s anti-phishing services are very widely licensed, ultimately protecting hundreds of millions of people.



Level 63
Netcraft Extension offers Heartbleed and phishing protection
Since two weeks when we posted about the Heartbleed bug, this deadly vulnerability has affected many trusted SSL web servers, putting users at the risk of compromising sensitive information to hackers. To stay safe from this deadly bug away you can make use of some browser extensions to warn you of Heartbleed affected websites. One such recently launched and useful tool is the browser extension from Internet security services provider Netcraft.

The Netcraft Extension for Opera, Chrome and Firefox offers Heartbleed and Phishing protection together. It allows you to see whether the websites you visit are still using potentially compromised certificates using data from Netcraft’s SSL Survey. If this is the case, the extension will also check to see if the site’s SSL certificate has been replaced; if it has not, then the site is considered to be unsafe, as the certificate’s private key could have been compromised.

Netcraft Extension
The free Netcraft Extension can be installed on Chrome, Firefox and Opera browsers. Go here and click on the icon of the browser on which you wish to install the extension, as shown in the image. You can choose from Firefox, Chrome or Opera.

Here I have chosen the Chrome browser, and after clicking onto the Chrome icon we are redirected to the Chrome Web Store. Click on the “FREE” tab located on the upper right hand of the page.

As shown below soon you will be asked to confirm the “New Extension” . Select “Add” here. You have now added the extension to your browser.

After the extension is added, the Netcraft logo can be spotted in the upper left hand corner of your browser. You can see the extension logo below in the image.

Check the website using Netcraft Extension
To check the website’s Heartbleed security status, click onto the Netcraft’s extension icon and you will see a pop-up windows displaying site status that includes risk rating, country of origin, Site rank, date of creation and host’s name.

In the case of a site being detected as potentially unsafe, the extension will notify the same by indicating a bleeding heart icon.

Features of Netcraft Extension
  • Provide detailed site reports
  • Shows Risk Ratings evaluating characteristics of the website
  • Protection against phishing sites
  • Protection against cross site scripting (XSS)
  • Conveniently report suspected phishing & fraudulent sites
  • PFS indicator – check if sites using SSL for encryption support Perfect Forward Secrecy (PFS).
  • Heartbleed indicator
The Netcraft Extension is a must have tool that can help you protect against Heartbleed bug. Apart from indicating which sites are using a certificate potentially compromised using Heartbleed. It also protects you from phishing attacks by displaying the hosting location and risk rating of every site you visit, and lets you help to defend the internet community against fraudsters.

The only disappointment is that currently this tool is not available for Internet Explorer.


Level 53
... For me now, this is not worth downloading... I already tried it a long time ago and was disappointed...
  • Like
Reactions: Mr.X


Level 20
Has anybody ever had Netcraft alert?


The above three options -- do we have any resident experts on the ins and outs, advantages and disadvantages of the options toggled off or on?

I looked on the Netcraft website, the Chrome Web Store, and did a quick Google search, and did not find sufficient info. Maybe I didn't dig deep enough..



Level 29
The second one allows Netcraft to be active whilst you're in Private Browsing, if it's not switched on it will not work in Private Browsing (Incognito) and only work whilst in normal browsing mode.