Which of the following is a common method to prevent insider threats?

Implementing strong access control measures is a fundamental method to prevent insider threats because it ensures that only authorized personnel have access to sensitive information and systems. Access controls limit what users can see and do within a system based on their job functions, thereby minimizing the risk of malicious actions or unintentional data breaches. By enforcing the principle of least privilege, where employees are given the minimum level of access necessary to perform their duties, organizations can significantly reduce the odds of an insider threat occurring.

In contrast, offering open access to all data can lead to vulnerabilities, as it allows any employee to view and potentially misuse sensitive information without proper oversight. Regularly changing employee roles can help with security practices, but by itself may not directly address the insider threat issue if access controls are still weak. Increasing monitoring of social behaviors might help in identifying suspicious activities, but without robust access controls, the potential for insider threats remains. Strong access control measures create a first line of defense by ensuring that only trusted individuals can access critical data, thus protecting the organization from internal threats effectively.