In addition, users can also utilize SMS technology, send wireless-pager messages, view up-to-date information on ICQ channels, and integrate ICQ with Outlook. Users can initiate and participate in PC-to-PC and PC-to-phone calls. ICQ Pro 2003b includes ICQphone, a feature that incorporates IP telephony functions into the ICQ program. Once your contact list is set up, you'll be notified when your friends are online so you can chat send instant messages, files, and URLs play games or just hang out. To seek out a friend on the ICQ network, simply enter his or her ICQ number, name, nickname, or e-mail address. This can decrease the risk of spreading a worm or other malicious code to your workstation and to other users.ICQ Pro 2003b is the latest release of ICQ, the instant-messaging program that lets you communicate with friends and colleagues in real time.

Because worms are generally spread by unknown users through URL links in instant messages, many of these types of malicious codes can be avoided by blocking unknown users from contacting you. Files and URLs are often transferred through instant messaging clients without passing through security devices-such as firewalls, uniform resource locator (URL) filtering, and gateway security devices-promoting the spread of malicious code through an unregulated medium.

Instant messaging services have become an increasingly popular vector for spreading malicious codes because these codes can spread rapidly through instant messaging services. The client and service do not provide central administration for the regulation and logging of the information being exchanged, which may result in the distribution of confidential information to the parties that should not be viewing this information. ICQ covers the basics of instant messaging, such as text, voice, and video communication. Many original users of ICQ transitioned to other instant messaging services, leaving ICQ with a diminished user base. The chapter explores ICQ, which was a very popular client and considered a pioneer in providing instant messaging services to the majority of users with Microsoft Windows operating systems.

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