Worm: A worm is similar to a virus, but does not require a host program or file and can replicate and infect computers with human action. Worms typically take advantage of a known vulnerability or bug in a computer program or operating system.
Wi-Fi Protected Access (WPA and WPA2): WPA and WPA2 are wireless security standards for protecting your wireless network and the data on your wireless network.
Virtual Private Network (VPN): A VPN allows two networks to be connected securely over the Internet as if they were one network. For example, you might use a VPN to connect your home network to your corporate network (if your company permits you to connect to the office from home).
Trojan: A Trojan (or Trojan horse) is malware that masquerades as legitimate software. Once a Trojan has been installed on a computer, it can do extensive damage to a computer or network, including deleting files, stealing data, and installing other viruses.
Spyware: Spyware quietly collects information about users on your computer or network. Spyware can be used to monitor a computer user’s activities or even log keystrokes.
Service Set Identifier (SSID): An SSID uniquely identifies your wireless network and is broadcast by your wireless access point.
Rootkit: A rootkit (or backdoor) is a program that allows an attacker to covertly gain access to your computer in order to steal data, do damage, or control your computer.
Phishing: Phishing (pronounced like fishing) e-mails are a type of spam used by identity thieves to trick an individual into revealing private data, such as banking account information or passwords. Many phishing attempts appear to come from a legitimate sender such as your bank, and may even include authentic logos and links to the actual bank’s Web site (as well as other links that may install other malware or take you to a malicious Web site).
Malware: Short for malicious software, malware is software code that is designed to damage files or entire computer systems, steal data, disrupt network, and do generally bad things to computers, networks, and people. Malware consists of viruses, worms, Trojans, spyware, adware, backdoors, rootkits, and bots.
Internet Protocol (IP) Address: Every device (for example, computers, printers, routers, and gaming consoles) on a network must have a unique address. An IP address consists of four sets of numbers from 0 to 255, separated by a decimal (for example, 192.168.1.200).