January 3, 2008
Cookies: A Pornographer's “Binoculars” To Spy On You, Part 2
In 2005, Jupiter Research published the results of a survey where a number of respondents believed some of the following misconceptions:
* Cookies are like worms and viruses in that they can erase data from the user's hard disks
* Cookies are a form of spyware in that they can read personal information stored on the user's computer
* Cookies generate popups
* Cookies are used for spamming
* Cookies are only used for advertising
All of the above are WRONG!!! Cookies are in fact only data, not program code. Thus they cannot erase or read information from the user's computer.
However, cookies allow for detecting the Web pages viewed by a user on a given site or set of sites. This information can be collected in a profile of the user. Such profiles are often anonymous, that is, they do not contain personal information of the user (name, address, etc.) More precisely, they cannot contain personal information unless the user has made it available to some sites. Even if anonymous, these profiles have been the subject of some privacy concerns.
Most modern browsers allow users to decide whether to accept cookies, but rejection makes some websites unusable. For example, shopping baskets implemented using cookies do not work if cookies are rejected.
According to the same survey, a large percentage of Internet users do not know how to delete cookies. The truth of the matter is that in the same way that you can walk behind a building to hide from someone trying to watch you with binoculars, you can look up "how to delete web cookies" on your search engine (Google, Yahoo, etc.) and there are many sites that will give you that information for your own protection.
Although cookies are a potential danger because pornographers might use them, a good understanding of how web cookies work will help you avoid a lot of headache.







