What is a worm in the context of computer security?

A worm, in the context of computer security, is defined as a destructive program that autonomously replicates itself and spreads across networks or systems without the need for human intervention. Unlike viruses, which require a host file to spread, worms can propagate independently by exploiting vulnerabilities in software or network protocols. These self-replicating characteristics enable worms to rapidly infect numerous systems, potentially causing significant damage by consuming bandwidth, degrading system performance, and creating security loopholes.

In this case, the correct choice emphasizes the worm's capacity for spreading itself through networks, highlighting its destructive nature as it targets system resources and security. While some other options propose enhancements or benign functions that are unrelated to the nature of a worm, they do not align with the fundamental definition of a worm in computer security.