Most businesspeople today are familiar with the term malware - that is, malicious software of some sort - but, in recent months I have heard multiple otherwise knowledgeable people misuse various terms related to malware types, so I decided to share a short primer that should be useful for people of all backgrounds: Malware is an all-encompassing term that includes many forms of intentionally malicious software (in fact, the word malware was first coined in 1990 by the late Israeli professor, Yisrael Radai, as a conjunction of the words "malicious" and "software").