What is a cybersecurity incident?

A cybersecurity incident refers to any event that indicates a potential breach of data or unauthorized access to systems. This definition encompasses various scenarios where sensitive information is compromised or systems are accessed without proper authorization, leading to potential harm to the organization's integrity, confidentiality, or availability of its data and resources. Recognizing this distinction is vital, as it allows organizations to respond appropriately by investigating, mitigating, and preventing further incidents.

The other options do not fit the definition of a cybersecurity incident. Routine maintenance of IT systems is a proactive measure intended to keep systems functioning efficiently and securely, rather than a response to any unauthorized actions. Similarly, a common software update process is a necessary task meant to patch vulnerabilities and enhance functionality, while periodic user training focuses on educating staff about cybersecurity best practices, which is a preventive measure rather than an incident.