Cookies are small pieces of data that are stored on a computer by a Web browser. Cookies can be used to store user preferences, track user behavior or store information about a user’s visit to a website. Cookies can also be used to track a user’s interactions with online advertising.

Cookies are generally harmless, but they can be used to track a user’s activities online. Some people worry that cookies can be used to track their activities even after they delete them from their computer. However, cookies cannot be retrieved from a computer once they have been deleted.

Cookies are …