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The Threat Assessment Handbook: A Practical Guide to Recognizing Warning Signs and Preventing Workplace Violence
Paperback
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ISBN13: 9798180561305
Publisher: Independently Published
Published: Jun 8 2026
Pages: 106
Weight: 0.34
Height: 0.22 Width: 6.00 Depth: 9.00
Language: English
Publisher: Independently Published
Published: Jun 8 2026
Pages: 106
Weight: 0.34
Height: 0.22 Width: 6.00 Depth: 9.00
Language: English
Almost every serious act of workplace violence is preceded by behaviour that worried someone. A manager who noticed but did not want to overreact. A coworker who felt uneasy but had nowhere to take the feeling. A friend who heard a comment that sounded wrong and hoped it was just talk. After the fact, the warning signs are obvious.
This is a book about that problem. It is built on a single idea that the field of threat assessment has spent four decades confirming. People who commit targeted violence do not snap. They move along a path. They develop a grievance, they settle on violence as the answer, they think about how to carry it out, they prepare, and then they act. Each step takes time, and each step leaves traces. The work of prevention is to notice those traces early and to interrupt the path before the last step.
That idea is hopeful, because it means violence is not a bolt from the blue that no one could have stopped. But it is also demanding, because it puts the responsibility somewhere uncomfortable: on the ordinary systems and ordinary people who encounter the warning signs first. The security guard at the door rarely sees the early warning. The supervisor, the HR officer, and the team lead usually do.
What this book will give you?
You will learn how to tell the difference between someone who is angry and someone who is dangerous, which are not the same thing and are often confused. You will learn why the popular image of the kind of person who does this is wrong, and why behaviour matters more than personality or background. You will learn how to build a small team that can receive a concern, look into it calmly, and decide what to do, without either panicking or dismissing it.
The book also covers the parts that are easy to neglect. How to write a reporting policy that people will actually use. How to talk to a person of concern without making things worse. How to handle a termination that carries real risk. What the law lets you do, and what it does not. How to prepare for the rare but catastrophic event of an active attacker, and how to keep a prevention programme alive once the initial alarm has faded.
Each chapter ends with practical material you can use directly. The appendices give you a team charter, a concern report form, a quick reference to warning behaviours, and a set of interview prompts. You can adapt them to your own organisation rather than starting from a blank page.
Who it is for?
I wrote this for the people who carry the responsibility but rarely get the training. A factory floor manager. A school principal. A clinic administrator. An HR generalist at a mid-sized firm with no dedicated security staff. A small business owner who has just had a frightening encounter and does not know whether to worry. The methods here are the same ones used by professional threat assessment teams in large institutions, explained in plain terms and scaled down so a small organisation can use them.
If you are a security or HR professional with formal training, you will find the book a useful structure for explaining your work to colleagues and leaders who do not share your background. Getting an organisation to take prevention seriously is often harder than the assessment itself.
That idea is hopeful, because it means violence is not a bolt from the blue that no one could have stopped. But it is also demanding, because it puts the responsibility somewhere uncomfortable: on the ordinary systems and ordinary people who encounter the warning signs first. The security guard at the door rarely sees the early warning. The supervisor, the HR officer, and the team lead usually do.
What this book will give you?
You will learn how to tell the difference between someone who is angry and someone who is dangerous, which are not the same thing and are often confused. You will learn why the popular image of the kind of person who does this is wrong, and why behaviour matters more than personality or background. You will learn how to build a small team that can receive a concern, look into it calmly, and decide what to do, without either panicking or dismissing it.
The book also covers the parts that are easy to neglect. How to write a reporting policy that people will actually use. How to talk to a person of concern without making things worse. How to handle a termination that carries real risk. What the law lets you do, and what it does not. How to prepare for the rare but catastrophic event of an active attacker, and how to keep a prevention programme alive once the initial alarm has faded.
Each chapter ends with practical material you can use directly. The appendices give you a team charter, a concern report form, a quick reference to warning behaviours, and a set of interview prompts. You can adapt them to your own organisation rather than starting from a blank page.
Who it is for?
I wrote this for the people who carry the responsibility but rarely get the training. A factory floor manager. A school principal. A clinic administrator. An HR generalist at a mid-sized firm with no dedicated security staff. A small business owner who has just had a frightening encounter and does not know whether to worry. The methods here are the same ones used by professional threat assessment teams in large institutions, explained in plain terms and scaled down so a small organisation can use them.
If you are a security or HR professional with formal training, you will find the book a useful structure for explaining your work to colleagues and leaders who do not share your background. Getting an organisation to take prevention seriously is often harder than the assessment itself.
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