What kind of malware uses encryption, data theft, denial of service, and possibly harassment to...

The kind of malware that uses encryption, data theft, denial of service, and possibly harassment to take advantage of a victim is ransomware. Ransomware is a type of malware that encrypts the victim’s files or blocks access to their system, and then demands a ransom for the decryption key or the restoration of access. Ransomware can also threaten to expose or delete the victim’s data if the ransom is not paid. Ransomware can cause significant damage and disruption to individuals, businesses, and organizations, and can be difficult to remove or recover from. Some examples of ransomware are CryptoLocker, WannaCry, Ryuk, and REvil.

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12 Types of Malware + Examples That You Should Know - CrowdStrike

What is Malware? Malware Definition, Types and Protection

12+ Types of Malware Explained with Examples (Complete List)