Just who is looking over your shoulder when you browse the internet? This weekend, web users will be given a new tool to shine a light on the commercial organisations which track your every movement online.
Lightbeam, a download produced by Mozilla, the United States free software community behind the popular Firefox browser, is claimed to be a "watershed" moment in the battle for web transparency.
Everyone who browses the internet leaves a digital trail used by advertisers to discover what your interests are. Users who activate Lightbeam will be able to see a real-time visualisation of every site they visit and every third-party that is active on those sites, including commercial organisations which might potentially be sharing your data.
Mozilla wants users who install the Lightbeam add-on to Firefox to crowd-source their data, to produce the first "big picture" view of web tracking, revealing which third parties are most active.
Lightbeam promises a "Wizard of Oz" moment for the web "where users collectively provide a way to pull back the curtains to see its inner workings", Mozilla claimed.