What is an intruder in a cybersecurity context?

In the context of cybersecurity, an intruder is defined as an individual or group that accesses a network without permission. This can include malicious actors who exploit vulnerabilities in a system to gain unauthorized access, potentially leading to data theft, disruption of services, or other nefarious activities. Intruders are often considered a critical threat, which is why organizations invest in security measures such as firewalls, intrusion detection systems, and access controls to prevent unauthorized access.

The notion of unauthorized access is essential here as it underscores the breach of trust that occurs when an intruder infiltrates a network. This distinction is fundamental within cybersecurity practices, guiding how security is implemented and monitored. Hence, identifying and preventing intrusions is a primary focus in the development of cybersecurity protocols and strategies.