Security Operations
Building an Insider Threat Program for a Cleared Contractor
The worst compromises of US classified information have come from cleared insiders, not external hackers. NISPOM 32 CFR Part 117 mandates that every cleared contractor maintain a formal Insider Threat Program. Building one is a balancing act between rigorous monitoring and a workforce culture that doesn't curdle into paranoia.
The NISPOM Mandate
Appoint an Insider Threat Program Senior Official (ITPSO) — US citizen, employee, cleared with the FCL. Often the FSO in small companies, separated in larger ones. Recorded in NISS.
Maintain a written program plan endorsed by senior management defining roles for ITPSO, FSO, HR, Legal, and IT.
Establish mechanisms to integrate data across HR, Legal, Security, and IT — a single indicator rarely reveals an insider threat; the confluence does.
Train every cleared employee within 30 days of access and annually thereafter; advanced training for program personnel.
User Activity Monitoring (UAM)
Contractors operating their own classified information systems must implement UAM on those systems — not just firewall logs but endpoint keystrokes, screen captures, file activity, and application usage.
Legal coordination is mandatory: every classified-system user signs a Privileged User Agreement or AUP with explicit no-expectation-of-privacy language. Login banner is required.
Security and IT Indicators
Unauthorized access attempts outside need-to-know. Data hoarding without operational reason. Odd hours work in secure areas alone. Bypassing security controls. Taking classified material home.
Behavioral and Personal Indicators
Unexplained affluence on a mid-level salary. Severe financial distress that creates recruitment vulnerability. Sudden disgruntlement or vocal hostility toward the company, government, or US policy. Concealment of foreign travel or contacts. Severe substance abuse impacting judgment.
Culture: Reporting Without Paranoia
Frame reporting as protecting the mission, the company, and the colleague — early intervention often gets struggling employees help before behavior escalates.
Provide anonymous reporting channels alongside direct FSO/ITPSO routes.
Strict, enforced anti-retaliation policy for good-faith reports.
Investigate discreetly; overreaction to minor unfounded reports destroys trust faster than any single incident.
Technology Layer
User and Entity Behavior Analytics (UEBA) flags anomalous patterns — odd-hour file access, sudden personal-email exfiltration attempts — that combine with HR signals to warrant investigation.
Data Loss Prevention (DLP) blocks CUI to unauthorized cloud storage, alerts on classified keywords in outbound email, logs USB activity.
Audit log review through an insider-threat lens: privileged account anomalies, files accessed outside normal scope, mass deletions.
Adjudication and Escalation
Insider Threat Hub triages reports. Many resolve quickly with context. Serious concerns escalate to DCSA through DISS.
When imminent threat is credible, suspend classified and IT access in coordination with HR and Legal — avoid wrongful termination and discrimination exposure.
Want help putting this into practice?
Desra Secure builds defensible insider threat programs that satisfy DCSA without breaking the workforce culture you depend on.
This guide is provided for general informational purposes only and does not constitute legal, accounting, or compliance advice. Specific obligations depend on your contracts and your environment.
