McAfee MIS09EMB3RAA User Guide - Page 252

250 McAfee Internet Security web bugs Small graphics files that can embed themselves in your HTML pages and allow an unauthorized source to set cookies on your computer. These cookies can then transmit information to the unauthorized source. Web bugs are also called "web beacons," "pixel tags," "clear GIFs," or "invisible GIFs." webmail Web-based mail. Electronic mail service accessed primarily via a web browser rather than through a computer-based email client such as Microsoft Outlook. See also email (page 241). WEP Wired Equivalent Privacy. An encryption and authentication protocol defined as part of the Wi-Fi (802.11) standard. Initial versions are based on RC4 ciphers and have significant weaknesses. WEP attempts to provide security by encrypting data over radio waves so that it is protected as it is transmitted from one end point to another. However, it has been found that WEP is not as secure as once believed. whitelist A list of websites or email addresses considered safe. Websites on a whitelist are those users are allowed to access. Email addresses on a whitelist are from trusted sources whose messages you want to receive. Compare to blacklist (page 240). Wi-Fi Wireless Fidelity. A term used by the Wi-Fi Alliance when referring to any type of 802.11 network. Wi-Fi Alliance An organization comprised of leading wireless hardware and software providers. The Wi-Fi Alliance strives to certify all 802.11-based products for interoperability and promote the term Wi-Fi as the global brand name across all markets for any 802.11-based wireless LAN products. The organization serves as a consortium, testing laboratory, and clearinghouse for vendors who want to promote the growth of the industry. Wi-Fi Certified To be tested and approved by the Wi-Fi Alliance. Wi-Fi certified products are deemed interoperable even though they might originate from different manufacturers. A user with a Wi-Fi certified product can use any brand of access point (AP) with any other brand of client hardware that also is certified. wireless adapter A device that adds wireless capability to a computer or PDA. It is attached via a USB port, PC Card (CardBus) slot, memory card slot, or internally into the PCI bus. WLAN Wireless Local Area Network. A local area network (LAN) using a wireless connection. A WLAN uses high-frequency radio waves rather than wires to allow computers to communicate with each other.