So we hear a lot about websites tracking us wherever we go, and how this is (or should be) a huge privacy concern.
For Mozilla it actually is, and it has been involved in initiatives like developing an icon system to quickly learn a site’s privacy politics, and last year’s Do Not Track feature (a way to explicitly tell a web site you don’t want to be tracked) now being implemented by other browser makers.
As part of this effort, yesterday, Mozilla CEO, Gary Kovacs, demoed Collusion at TED university. It is a new Firefox extension that shows the websites you visit, the websites these interact with (sharing some degree of information), and how they all connect, in a graphical way.
As you browse the web, more nodes are added to the graph so you can see how information may be shared among sites.
You can export the image as a JSON string you can use to make further analysis, and it if becomes to complex you can reset the graph.
Collusion doesn’t require you to restart Firefox and can be installed from Mozilla Add-ons.