What Is an Insider Threat?

This report summarizes the insider threat landscape—defining insider types, common indicators (unusual data movement, off-hours access, privilege escalation requests, lateral movement, log tampering), real-world data-leak examples (Tesla, Yahoo, Rippling/Deel), the financial and regulatory impacts, and practical mitigations (least privilege, MFA, UEBA, DLP, training) while describing how Picus Attack Path Validation simulates insider TTPs to expose attack paths.