What is Ransomware primarily known for?

Ransomware is primarily known for its characteristic ability to encrypt files and demand a ransom in exchange for the decryption key. This form of malware not only encrypts data but also poses a significant threat by making the data inaccessible to the victim until the ransom is paid. This holds true in the context of the correct response, which encompasses both the encryption of data and the underlying motive of stealing it through coercion.

The other choices do not accurately represent the defining features of ransomware. For instance, while some malware may steal data, the key aspect that differentiates ransomware is its focus on encryption as a means to extort money. Options discussing theft without encryption or disruption without theft fail to capture the essence of ransomware’s operation, which revolves primarily around encryption and the subsequent ransom demand. Thus, the option that specifies both theft and encryption correctly reflects the nature of ransomware and its modus operandi.