What characteristic defines a worm in the context of cybersecurity?

A worm in the context of cybersecurity is defined as a self-replicating program that spreads independently across networks and systems without the need for human intervention or a host file. Unlike viruses, which require a host program to attach themselves to for replication, worms exploit vulnerabilities in systems and networks to propagate themselves. This ability to move autonomously and infect multiple devices makes worms particularly dangerous, as they can quickly spread through networks, leading to system slowdowns, data breaches, and widespread disruption without direct user action.

In understanding how worms operate, it becomes clear why they are categorized distinctly among other types of malware. For example, while some types of malware might focus on deleting files or disrupting operations, worms specifically emphasize their replication and transmission capabilities, which distinguish them from tools designed for network security or other malicious software.