Do you realise that your browser not only accesses the site you intended but may also have visited 3rd party websites running connected services? For many of us this revelation is nothing new but to a lot of surfers this type of activity is news — for the simple reason that it happens behind the scenes. Typically a page will contain instructions to fetch things like stylesheets that control the layout of the page, graphics and photographs to illustrate it and scripts to create functionality. To both the web browser and the 3rd party websites involved these unseen secondary requests are indistinguishable from a user just typing a URL into the address bar. Recently, Mozilla released a new add-on for Firefox called Lightbeam.
Lightbeam shines a light on which websites you’re really visiting
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