at • tack, n. an attempt to steal, destroy, or alter data off a computer or network.
black hat, n. an unethical hacker who breaks into computer systems for personal gain.
bot • net, n. a network of computers controlled by cybercriminals using a malicious program.
DoS at • tack, n. a Denial-of-Service (DoS) attack is designed to obstruct or stop the normal functioning of a Web site, server, or network resource. One way in which hackers do this is to flood the server with more requests than it can handle.
DDoS, n. a distributed Denial of Service Attack (DDos) is a DoS attack that uses multiple machines. Hackers will often use one “master” machine to coordinate with other “zombie” machines.
drive-by-down • load, v. a drive-by-download is a malicious download of malware that happens invisibly after you visit a Web site that has been compromised by a hacker.
fuzz • ing, v. when hackers input lots of random data — or fuzz — in an attempt to make a system crash. Used by hackers to look for vulnerabilities in code.
key • log • ger, n. a keylogger records everything a user types, including passwords and credit card details.
mal • ware, n. a term used for all software that is intended to be harmful or perform unauthorized actions.
phish • ing, n. the attempt to acquire credit card details, passwords and personal details by tricking individuals into entering personal information on fake Web sites that closely resemble legitimate ones.
root • kit, n. the programs a hacker uses to avoid detection while gaining unauthorized access to a computer.
so • cial en • gi • neer • ing, v. to manipulate people into sharing private/confidential information.
spear-phish • ing, n. a type of phishing targeting a specific individual or department within an organization.
spy • ware, n. a type of malware that harvests users’ confidential data, e-mail addresses and browsing habits and forwards the information without users’ consent to a third party.
Tro • jan hor • ses, n. malware that appears to be legitimate but that when launched can do something harmful such as steal passwords or give a hacker access to the network.
vi • rus, n. a computer program that can replicate itself and spread from computer to computer, corrupting files or stealing information.
white hat, n. an ethical hacker who breaks into a system to expose security flaws, usually at the request of its owner.
worm, n. like viruses, computer worms replicate and harm and they often rely on security failures to enter a computer network.
ze • ro day at • tack, n. a cyber attack that exploits a vulnerability in a computer application which was previously unknown.