How cookies work in your browser.
Cookies may sound like they have something to do with delicious baked goods, but in terms of the Internet, they are simply small text files that allow a website to store information related to the user of the computer. These files are contained on the user’s computer, usually in the web browser’s folder.
The web browser itself will look for cookies in the computer folder specified for storing cookies. The browser will then open the file that is requested from a certain website, if one exists. If no cookie file exists, a new one will be created.
In addition, browsers regularly maintain cookies. Cookies also specify expiration dates. When these dates are reached, the browser will automatically delete the file from the computer.
Cookies provide an easy way to customize and maintain the look of webpages to a user’s need, and it streamlines the services they provide. However, many people believe cookies may be a threat to personal security. While it is true that cookies collect a user’s information, they are not programs that can be run on the computer. Therefore, they are not viruses or any malicious programs that can read or erase information from a hard drive, and they will not cause pop-ups.
There are still drawbacks. Cookies can be intercepted as they are being relayed from website to computer. Recently a cookie exploitation called Firesheep, and allowed people to log on other users’ Facebook and Twitter accounts.
While people still debate whether the benefits of cookies outweigh the threats that they may pose, in the long run, cookies make the Internet more convenient and dynamic.
adapted via thetartan.org