How Does an Insider Threat Harm National Security? Could Your Business Be at Risk?

What makes insider threats so dangerous for governments and businesses alike? How does an insider threat harm national security by exposing classified information, disrupting critical operations, and increasing cyber risks across essential sectors? Trusted individuals with authorised access can unintentionally or deliberately create serious security vulnerabilities if effective controls are not in place. Organisations should strengthen access management, monitor user activity, and promote ongoing security awareness to minimise potential damage. Security Journal Americas explains how insider threats evolve, why they remain a major national security concern, and the best practices organisations can adopt to protect critical infrastructure and sensitive information.