What is the main risk associated with viruses?

The main risk associated with viruses is that they can damage computer performance without user consent. Viruses are malicious programs designed to replicate and spread, often leading to various negative impacts on a computer system. They can corrupt files, steal sensitive information, or take control of system processes, often without the user's knowledge or approval. This invasive nature can lead to degraded performance, system crashes, and potential data loss, which poses significant security risks and threatens the integrity of the user's system.

The other options address potential issues that might arise but don't capture the primary threat posed by viruses. For instance, while some viruses might affect internet speed or use storage space, these effects are secondary to their primary function of causing harm and disruption. Moreover, the need for constant software updates, while important for maintaining system security, is a related but separate concern, focusing more on preventative risk management rather than the inherent risks of the viruses themselves.