-are used to identify users by web casting, e-commerce and other web application.
-Contain user information and are saved in the computer hard disk.
Are used by some websites to store password and track how regularly we visit a website, that's how we become potential targets for web advertisers.
Enable web sites to collect information about your online activities and store them for future use, then the collected details will be sold to any company that request for it.
-electronic file is the combining of data in a database that can be sold to the Internet by the company to the interested parties.
-This database is in a form such as magazine subscription or product warranty cards that had been filled by online subscribers. -The information in electronic profile includes personal details such as your age, address and marital status.
-Refers to a program that collects user information without the user's knowledge.
-Can enter computers, sneaking in like a virus
-Is a result of installing new programs
-Communicates information it collects to some outside source while we are online.