What function do viruses serve in a computer context?

In a computer context, viruses are designed specifically to contain instructions that can alter the normal operations of a computer system or corrupt data. They often attach themselves to legitimate programs or files, executing harmful actions without the user's consent. This can include deleting files, stealing sensitive information, altering software functionalities, or replicating themselves to spread to other systems.

The role of a virus is malicious in nature, typically aimed at causing harm or disruption, which distinguishes it from other types of software such as those that enhance performance, facilitate data access, or assist in data recovery. Thus, the focus on their capacity to influence how a computer operates or manage data in a destructive way defines their function in the digital landscape.