What type of malware is designed to replicate itself and spread to other computers?

The type of malware designed to replicate itself and spread to other computers is a virus. A virus attaches itself to a host program or file and, when executed, reproduces by inserting copies of itself into other programs or files on the same device or across a network. This self-replication mechanism enables it to spread, potentially causing harm to data and system integrity.

In contrast, spyware is designed to gather information about a user without their knowledge, while a Trojan disguises itself as legitimate software to trick users into installing it, serving different malicious purposes. Ransomware, on the other hand, encrypts the victim's files and demands a ransom for decryption, without typical self-replicating behavior like a virus exhibits. Each of these types of malware has distinct characteristics and methods of operation, with viruses being notable for their replication and spreading capabilities.