Are you preparing to take the SY0-401 or SY0-501 Security+ exam? If so, make sure you can identify different malware types.
As an example, see if you can you answer this question?
Q. Dr. Terwilliger installed code designed to enable his account automatically if he ever lost his job as a sidekick on a television show. The code was designed to reenable his account three days after it is disabled. Which of the following does this describe?
A. Logic bomb
B. Rootkit
C. Spyware
D. Ransomware
See if you're correct (and see the full explanation) here.