Trojan
Malicious software that seems useful but facilitates unauthorized access to the user’s computer.
Worm
Self replicating computer program
Virus
Malicious computer program that infects a file
Antivirus
Software that monitors a computer or network for malware
Malware
Malicious software
Ransomware
Malware that locks users out of their devices or blocks access to files until a ransom is paid
Rootkit
Malicious code that loads into the early loading stages of a computer. Hides from the OS and gives the bad guy full access.
Botnet
Robot network. Collection of software robots that live on infected computers and are controlled by bad guys.