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[1] Anti-virus / Browser Plugins [2] url date/time IP city/state/country (from IP) anything else they want [3] Most software firewall/anti-virus suites include a browser plugin that can check every site you want to visit against a list of potentially harmful sites. This can mean (depending on implementation) that they are passing information to their backend about every single browser request you make. It’s like you are cc:ing them on every URL you want. Plugins make the experience of the web much richer, but each one has access to the URLs you visit, the content of those URLs, and anything else it wants on your hard drive (files, data, webcam, microphone, gps, etc.). [4] Indefinite. Could be anything. [0] 
Your browser plugins (also known as browser helper objects and add-ons) act on the URL, if applicable.
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