Every time a person goes online, prying eyes are watching his or her online behavior. Companies spend a great deal just to keep track of users’ internet activities. Users should know that this is important to those companies for marketing purposes. Almost everything the users do is being “analyzed”. What sites do they frequently visit? How long do they stay on a particular site? What pages do they visit during their stay? Furthermore, trackers look at the categories of the posts that users read and the comments that they leave.
Online behavior can be tracked mainly with the help of HTTP cookies. These are little packets of information that contain user preferences and are stored in the computer. The original purpose of using cookies was to improve the users’ browsing experience. With their preferences stored, users do not have to repeatedly provide their basic data, such as login information, very time they visit the same site.
Because cookies store private information, privacy concerns have been raised about it. As a response, browsers provided options for users to choose whether or not they want cookies to be stored. Also, at his or her discretion, a user can delete cookies at anytime. In other words, users do not have to worry because they have absolute control over these “tools”.
However, there is a new breed of cookies that seem to have taken control – supercookies! It was revealed by a privacy researcher that supercookies can track users even when cookie storage is disabled, or when options are set to privacy mode. These cookies use a new technology that makes them undeletable because they can resurrect after being deleted. They can also collect a user’s browsing history, even when there are two or more different browsing tools used.
The supercookie detect a new tool as a unique identifier known as ETag. Some companies are now using supercookies. This was discovered by researchers at Stanford University and UC Berkeley. Actually, one supercookie that was found is capable of looking back at web-browsing history. It is not the ordinary cookie because this one can dig deep into as many as 1,500 sites that the user has visited. They presumed that the new breed of cookie is paying attention to the products that the user is interested in buying. Supercookies are very similar to the older cookies, but these new ones are worrisome because of their “toughness”.