There are several websites world over that track users. Originally, tracking mechanisms included Cookies, Flash Cookies. Historically too, I have written about Firefox add-ons in the articles below: Firefox add-ons you should never surf without Watching you silently – Flash Cookies / LSOs As mitigation measures were developed to counter cookies and flash cookies, old … Continue reading Web sites track users with invisible canvas fingerprint rather than cookies or flash cookies
You can use http://nmap-online.com It is the equivalent of scanning a system or network for open ports from outside of the network you are in.
You can identify the vulnerabilities open for your web browser by visiting http://www.browserscope.org. This gives you an opportunity to look for a patch for any vulnerabilities eliminated by your browser software developer.