What is a security incident?

A security incident is defined as an event that compromises the confidentiality, integrity, or availability of information. This definition encompasses a wide range of events that can pose a threat to an organization's data security. For example, unauthorized access to data, data breaches, or any significant disruption in service can all be classified as security incidents.

The importance of this definition lies in its focus on the impact that these events have on information security. Confidentiality is about ensuring that sensitive information is accessed only by authorized individuals, integrity refers to the accuracy and trustworthiness of data, and availability ensures that data and resources are accessible when needed. If any of these elements are compromised, it indicates a violation of security protocols or processes, thereby classifying it as a security incident.

In contrast, the other options do not meet the criteria for a security incident. A routine security check is a preventative measure, not an incident. An event that does not affect data integrity typically falls outside the realm of security events, as it does not pose a risk to the security of information. Unplanned system downtime, while disruptive, is not necessarily a security incident unless it can be traced to a security breach or exploitation. Therefore, the correct answer accurately captures the essence of what constitutes a security incident