This podcast provides an extensive overview of insider threats within the transportation industry, defining them broadly as risks originating from trusted individuals such as employees or contractors. Experts interviewed classify these risks into three main types: malicious, negligent, and third-party insiders, noting that motivations for malicious acts include personal gain, revenge, or financial hardship. It details comprehensive strategies for detecting and mitigating these threats, emphasising the need for behavioural observation, technical monitoring, and collaboration among various organisational stakeholders, including HR, security, and legal teams. Furthermore, several security firms outline their services and provide case studies demonstrating how their full-lifecycle approaches, which combine behavioural science and analytics, have successfully prevented serious security incidents at transportation companies. Ultimately, the experts stress that insider threat prevention requires continuous training, cultural change, and executive-level buy-in to protect essential operations.