An article called ‘They’ Really Are Watching You discusses the several ways that some, for example advertising companies or web analytics companies, track people through their digital fingerprints. In the end, I felt that it all comes down to your computer’s cookies, cookies are what allow these companies to track you.
One way method explained by the article, said to by the simplest, was,
An advertising network can track you is by putting a “third party” browser cookie on your computer when you visit a site to which it supplies advertisements. When you visit another site that uses the same advertising network you can be identified by that cookie. As time goes on, it will build up a picture of your browsing habits
After reading the article I felt that, although those described in the article have no particular malicious intent, it’s so simple for them to track you, what will happen when a person or group comes along does?
link to the article: http://www.esecurityplanet.com/browser-security/they-really-are-watching-you-1.html