Final answer:
The four types of bad software (SMKP) are Malware, Spyware, Keyloggers, and Trojans. These malicious programs are designed to interrupt, damage, or illegally access systems, with each type targeting different aspects of user security and privacy.
Step-by-step explanation:
The four types of viruses/bad software often referred to by the acronym SMKP are Malware, Spyware, Keyloggers, and Trojans. These types of malicious software are designed to damage, disrupt, or unlawfully access a computer system. Malware is a broad category that includes spyware, keyloggers, trojans, viruses, worms, ransomware, and other malicious programs. Spyware is software that gathers information from a system without the user's knowledge. Keyloggers are designed to record keystrokes, allowing hackers to capture sensitive information such as passwords. Lastly, Trojans are malicious software that disguise themselves as legitimate programs but perform harmful actions once installed.