Which of the following best defines a computer worm?

A computer worm is best defined as a type of malware that spreads independently. This characteristic distinguishes worms from other forms of malware, such as viruses. Worms do not require a host program or user intervention to propagate; instead, they can exploit vulnerabilities in networked systems or utilize methods like email to replicate themselves across networks, often without the knowledge of the user.

By spreading independently, a worm can rapidly infect many systems, leading to significant damage and disruption. This behavior of self-replication and automated distribution makes worms particularly concerning in terms of cybersecurity. This understanding of a worm's independent nature highlights the importance of securing systems and networks against vulnerabilities that could be exploited by such self-replicating malware.