Best selling book now available!
Personal Threat Management: Understanding Behaviour, Intent, and Escalation
Personal Threat Management is a practical guide for professionals required to make clear, proportionate judgements about personal threats — often in situations clouded by uncertainty, emotion, and incomplete information.
Drawing on extensive frontline experience, the book explains how to distinguish between behaviour that creates noise and behaviour that signals genuine threat. Central to this is the distinction between so-called “Howlers” — individuals who generate attention, intimidation, or disruption without credible intent — and “Hunters”, whose behaviour, access, and trajectory warrant serious concern and timely intervention.
Rather than promoting reactive security measures, the book focuses on understanding behaviour, intent, fixation, and escalation — the elements that determine whether a situation requires action, monitoring, or reassurance.
Written for security practitioners, investigators, and professionals responsible for advising others under pressure, Personal Threat Management provides clear terminology, evidence-informed frameworks, and real-world examples to support sound decision-making when the stakes are high.
The emphasis throughout is practical application, not academic theory. However, key research is referenced for those who wish to explore the underlying behavioural science in greater depth.
If your role involves assessing concern, advising clients or decision-makers, or separating real danger from background noise, Personal Threat Management offers a grounded, experience-led approach you can rely on.
Testimonials:
Online death threats are depressingly common. But how do you separate them into those issued by sheer fantasists, and those coming from someone with genuinely deadly intent? In Personal Threat Management: The Practitioner’s Guide to Keeping Clients Safer, Philip Grindell explains how to spot the difference – and what to do when you realize someone really does pose a threat. Timely and valuable to
anyone in the public eye.
Richard Madeley, writer and broadcaster
This book will be a valuable resource for individuals beginning in Behaviour Threat Assessment (BTA) or those who have been practising for years. Based on his years of experience in successfully assessing and managing numerous cases, Philip has put together best practice examples in an informative and understandable manner. I would recommend this book to Law Enforcement, Mental Health, Security Professionals, Attorneys, Human Resource Professionals, and anyone who is currently working on a BTA team or those putting a team together.
William J. Zimmerman, Detective U.S. Capitol Police – Threat Assessment Section (Retired)
Abuse, intimidation and threats are sad facts of life in the modern world. How should you respond to them? Should you be worried about escalation to physical harm? How should you protect your clients
and their families or co-workers? Philip Grindell discusses how the process of behavioural threat assessment can help to answer these and related questions. Th e perspective he offers is highly practical, based on decades of fi eld experience. If you want to prevent people from becoming victims of violence, put this book on your reading list.
Dr Stephen D. Hart, PhD, Director and Threat Assessment Specialist, President, Canadian
Association of Threat Assessment Professionals
For those advising individuals and organizations on threat risks, it’s essential to understand who and what one is dealing with. Grindell’s decades of real-world experience mean his voice is ignored at your and (more importantly) your client’s peril.
Julian Pike, Lawyer and Head of Reputation Management and Sport at Farrer & Co
