Recognizing Leakage: How Behavioral Warning Signs Reveal Hidden Intent

One of the most consistent findings in targeted violence research comes from the U.S. Secret Service's National Threat Assessment Center: before carrying out planned attacks, individuals almost always show observable warning behaviors and frequently communicate their intent in advance, either directly or indirectly. This phenomenon is called 'leakage.'

Leakage doesn't always look like a direct threat. It might be a concerning comment shared with a friend, troubling social media posts, expressions of grievance to a family member, or escalating hostile language toward a particular person or group. The person may not realize they are telegraphing their plans. Understanding what leakage looks like can be the difference between early intervention and tragedy.

Why Leakage Matters in Prevention

Most targeted violence is not impulsive. It develops over time. Attackers often undergo a period of psychological struggle, during which they test whether others around them take their concerns seriously. They may share their grievances, express hopelessness, or make veiled references to wanting to 'do something about' a perceived wrong. These communications are often ignored, dismissed, or not recognized as warning signs by people who hear them.

When leakage is recognized early and reported to the right people, it creates an opportunity for intervention. A conversation, a mental health evaluation, or professional threat assessment can sometimes redirect someone away from violence before they reach a point of no return.

Detecting Leakage in Everyday Settings

Leakage can happen in workplaces, schools, healthcare settings, and communities. It may take the form of expressed suicidal ideation, preoccupation with a specific person or event, fascination with previous attacks, or inflammatory statements about 'taking action.' The key is recognizing that these communications are not random and that they warrant careful attention.

This is where behavioral threat assessment tools become valuable. The Homicide Threat Screener (HTS) is designed to help frontline staff in schools, workplaces, and healthcare settings quickly and systematically identify behavioral indicators that suggest someone may be at risk of harming themselves or others. The HTS takes 5 to 10 minutes to complete and helps distinguish between casual statements and genuine warning signs that need professional follow-up.

For higher-risk situations or more detailed assessment, the Homicide Safety Risk Assessment (HSRA) provides trained professionals with a comprehensive framework for evaluating intent, capability, and circumstances. The HSRA takes longer and goes deeper, helping clinicians, law enforcement, and threat assessment teams make informed decisions about the level of risk and the appropriate intervention.

Moving Forward with Confidence

Recognizing leakage is not about creating a culture of paranoia or reporting every angry comment. It is about paying attention to patterns, taking concerning communications seriously, and knowing when to escalate to someone trained to evaluate risk properly. When communities and organizations develop the awareness to spot leakage and the systems to respond appropriately, prevention becomes possible.