CT: Reactive scanning is the bread and butter of an antivirus. Basically, it scans any new program or file before it’s opened and checks if it is a known malware or if it behaves like one.
It’s all done in the background, and the scanned file or program only opens once the antivirus has finished the scan.
Then there is the full system scan, where the antivirus goes through every nook and cranny of your device in order to find malware or any other suspicious software or files.
Some AVs also block malicious ActiveX or Java scripts from infecting your PC. Plugins based on these technologies can be used to make your PC part of a botnet, inject code or do drive-by downloads.
S: https://heimdalsecurity.com/blog/what-is-the-best-antivirus/ (last access: 22 December 2016)
N: 1. anti-: 1903, from “anti-” (word-forming element meaning “against, opposed to, opposite of, instead,” from Old French anti- and directly from Latin anti-, from Greek anti “against, opposite, instead of,” also used as a prefix, from PIE *anti- “against,” also “in front of”; it appears in some words in Middle English but was not commonly used in word formations until modern times).
virus (n): From late 14c, “venomous substance,” from Latin virus “poison, sap of plants, slimy liquid, a potent juice,” probably from PIE root *weis– “to melt away, to flow,” used of foul or malodorous fluids, with specialization in some languages to “poisonous fluid”. The computer senses is from 1972.
2. Anti-virus software is a program or set of programs that are designed to prevent, search for, detect, and remove software viruses, and other malicious software like worms, trojans, adware, and more.
3. Software used to detect, prevent and remove malware, including viruses, affecting a user’s computer or electronic address accounts.
4. According to “The Canadian Style,” words beginning with the “anti” prefix are usually written as one word.
S: 1. OED (last access: 19 December 2016). 2. WEBROOT – https://goo.gl/36KDwM (last access: 19 December 2016). 3 & 4. TERMIUM PLUS (last access: 22 December 2016).
S: CITESEERX – https://goo.gl/k3GKN3 (last access: 19 December 2016)
SYN: antivirus software, anti-virus software, virus-protection software.
S: TERMIUM PLUS (last access: 22 December 2016)