Every protective intelligence file has one. The person who has been writing, calling or posting about the same complaint for months, sometimes years. Nothing has ever happened. Over time, the emails get skimmed, the calls get logged and the case quietly slides to the bottom of the pile.
New research suggests that instinct deserves a second look.
What the research found
In a study published this month in the Journal of Threat Assessment and Management, Adam Cotton and Mario Scalora looked at grievance factors associated with behavioral persistence. They surveyed 337 adults who held a specific grievance and took at least one action to address it. People who engaged in more severe behaviors also tended to be the ones who had nursed their grievance longer.
Molly Amman walks through the study in Issue 7 of The Threat Assessment Brief, and her point is one every protection team should take to heart. Targets and investigators can become desensitized to a grievance that goes on for a long time without violence. The data argue for treating grievance as something that moves and develops over time, not a box that is either checked or unchecked.
What persistence looks like in practice
Anger alone is not the signal. According to the study as Amman summarizes it, persistence was most strongly tied to engagement with violent content or violence-supportive associates. It also mattered when preoccupation showed up alongside efforts to monitor, contact or approach the target. In protective intelligence terms, a few questions are worth asking on every long-running case:
- Is the focus narrowing? A general complaint about an institution that becomes fixation on one named person is a change worth noting.
- Is the person learning more about the principal? Questions about routines, family, travel or residence suggest research, not just venting.
- Is contact turning into approach? Repeated low-level contact that starts to include showing up in person, or attempts to, deserves a fresh assessment.
- What is their online world like? Immersion in communities that celebrate violence changes the picture.
- When was this file last actually reviewed? Not logged. Reviewed, by someone looking at the whole timeline.
Why this fits an intelligence-led approach
Long-running cases are where low-profile, intelligence-led protection earns its keep. Most of these individuals will never act, and the right response is often quiet monitoring rather than a visible show of force. But quiet does not mean passive. Periodic reassessment of the full history is what lets a protection program spot a slow shift before it becomes an approach, and put resources where the real risk is.
As we noted in our post on the Secret Service workplace violence guide, concerning behavior usually comes first. Reducing how easily someone can research a principal helps too, which is why our digital exposure checklist belongs in the same conversation.
If you have a person of concern who has been around so long that nobody looks closely anymore, talk with Protection Cell about a fresh, discreet threat assessment.
Photo: sue hughes via Unsplash

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