Web Beacons

A web bug/beacon is a transparent, 1x1 pixel gif file which can be used to track users. It can be hidden and placed on a web page or an email letter to help the company know their users’ browsing habits. For website users, it’s hard for them to detect the web bug. They need to open the website source files and check whether there is an image file having a different file directory on the server because web bugs are usually being sent by different servers.

The data that web bugs track includes:
 * User’s IP address


 * The web bug’s URL address


 * Time being browsed


 * Browser type


 * Cookie history