What is an indicator of anomalous behavior in security?

An indicator of anomalous behavior in security is the alteration or removal of classification markings. This action is significant because classification markings are essential for identifying the sensitivity level of information and controlling access to it. When these markings are tampered with, it raises immediate concerns about potential insider threats, as it may signal intent to conceal information, mishandling of sensitive data, or unauthorized access. Such behavior deviates from the expected norms of handling classified materials and triggers the need for further investigation to ascertain the reasons behind such actions.

In contrast, regular attendance at training sessions, compliance with all security policies, and engagement in team-building activities are indicative of normal and positively aligned behavior within a security context. They reflect adherence to protocols and an overall commitment to organizational security, making them unrelated to identifying potential insider threats.