National Insider Threat Awareness Month & Protecting Our Potential

Accel Innovation Corp.

Aug 31

3 min read

A Message from the Security Department

As we enter the final quarter of the year, our focus shifts inward. Every September, the Cybersecurity and Infrastructure Security Agency (CISA) and the Office of the Director of National Intelligence (ODNI) co-sponsor National Insider Threat Awareness Month (NITAM). The 2026 theme for NITAM is "Protecting Our Potential".

While previous issues have focused heavily on external actors and complex software vulnerabilities, this month we are keeping it simple: a secure facility and a secure network are only as strong as the people who operate them. Insider threats do not always look like the espionage you see in movies; they are often much closer to home and can be either intentional or entirely accidental. This month, we cover what an insider threat actually looks like, new guidance from CISA, and how we can support each other through early reporting.

Examples of SEAD 3 Reporting expectations

Understanding the Insider Threat

When we hear "insider threat," many people assume it only applies to government contractors stealing classified data, but CISA's definition is much broader. An insider threat involves anyone with authorized access, including employees, contractors, and vendors, whose actions compromise the organization's mission, data, or physical safety.

The harm caused by an insider does not have to be digital; it can be physical, operational, or reputational. Generally, insider threats fall into two main categories:

The Intentional Insider: These individuals take actions that deliberately harm the organization for personal benefit, or to act on a personal grievance. They may be motivated by financial pressures, a desire for recognition, or ambition. Examples include an engineer stealing trade secrets to sell to a competitor, or someone sabotaging equipment intentionally.
The Negligent Insider: These individuals do not intend to cause harm, but their careless actions open the door for adversaries. A primary example is an employee allowing someone to "piggyback" or tailgate them through a secure entrance, or an employee accidentally bypassing data security protocols because they are rushing.

Behavior Before Operations: The Warning Signs

A core principle of insider risk management is that an insider threat is behavioral before it becomes operational.

People do not usually wake up and decide to sabotage their workplace out of the blue. There is a pathway that often begins with a grievance, progresses to noticeable behavioral changes or complaints, and involves testing boundaries. Before an intentional insider attempts to steal data, the IT department might notice unusual system activity or data hoarding, while HR might notice disciplinary patterns, and security might see physical access anomalies.

Because these warning signs are observable, they are preventable. The goal is to intervene during the behavioral phase, long before a security breach occurs.

The CISA 2026 Insider Threat Mitigation Guide

To mark NITAM 2026, CISA released its updated Insider Threat Mitigation Guide: 2026 Edition. The guide emphasizes a holistic approach that combines physical security, personnel awareness, and information-centric principles.

A critical takeaway from the new guidance is that a strong insider threat program should empower employees, not serve as a policing mechanism. The goal of assessing a possible insider threat is to preventan incident and change the course of events from a harmful outcome to an effective mitigation.

The defense community champions the phrase "Supporting through Reporting". Notifying the security team of concerning behavior is not about getting a colleague in trouble; it is about achieving a positive outcome and getting them the support or intervention they need before a situation escalates.

What This Means For You:

We all play a part in recognizing forms of insider threat. Do not assume that someone else has already reported a concern. If you observe suspicious activity or concerning behavioral changes in the workplace, rely on established protocols:

Challenge Every Stranger: Never allow anyone to "piggyback" or follow you through a secure door without actively scanning their own security badge. It is not rude; it is essential physical security.
Watch for Data Hoarding: Be mindful of unusual system activity, such as a colleague suddenly attempting to access or download restricted files outside of their normal job duties.
Support Through Reporting: If you notice a colleague exhibiting escalating grievances, testing boundaries, or showing concerning behavioral changes, report it early. Early intervention protects both the individual and the organization.
Protect Your Credentials: Remember that negligent behaviors, like leaving a workstation unlocked or mishandling sensitive information, can accidentally turn a well-meaning employee into an insider threat.

"In personnel security, early transparency protects the mission. Whether reporting a suspected data spill, a physical security gap, or concerning workplace behavior, your Security Team is here to support you and keep our environment safe."