This white paper discusses the evolving nature of insider threats, highlighting a significant shift in breach statistics over recent years. It notes that 68% of breaches now involve human error or social engineering, a stark contrast to previous years where external actors dominated. The paper details the financial implications of insider incidents, citing that employee negligence accounts for 55% of these incidents, costing organizations an average of $7.2 million to remediate. It categorizes insider threats into negligent, compromised, and malicious insiders, each with distinct motivations and impacts on organizations. The document emphasizes the need for CISOs and security teams to adopt a multifaceted strategy to address these threats, including training for employees, implementing a formalized monitoring framework, and embedding preventive measures. It underscores the importance of collaboration across departments to effectively manage insider risk and maintain a balance between security and productivity. The paper concludes with recommendations for tracking insider behavior and enhancing detection capabilities to mitigate risks.