Cybersecurity has spent decades getting better at detecting and responding to threats. But attackers are moving faster than defenders can react.
The Preemptive Cybersecurity Handbook outlines a different approach: continuously understanding your exposure, seeing your organization through an attacker’s eyes, and acting before threats become incidents.
The Clock is Ticking
8hr
mean time to exploit in 2026, down from 56 days in 2024 and 2.3 years in 2018
(zerodayclock.com)
78%
of exploited CVEs in 2026 were zero-days, up from 16% in 2018
(zerodayclock.com)
263%
Increase in CVE submissions between 2020 and 2025
(nist.gov)
Whats's Inside
How to Outpace the Threat
Understand preemptive cybersecurity
Why reactive security is struggling to keep pace with attackers.
Know your true attack surface
How to understand what attackers can actually see and exploit.
Understand the attacker reality
Bringing real-world attacker activity into exposure prioritization and defensive strategies.
Get ahead of zero-days
What shrinking exposure windows mean for defenders.
Measure what matters
Moving beyond traditional security activity metrics.
"This book is for the security leaders and practitioners who know that the old model is not enough "
Michael Gianarakis
CEO, Searchlight Cyber
Take a Journey through the Preemptive Cybersecurity Handbook
Why?
Understand why cybersecurity needs to change
Explore the changing threat landscape through real world-case studies, the limits of reactive security, and the six principles behind a preemptive approach.
What?
Understand what preemptive cybersecurity looks like in practice.
Discover the foundations of Preemptive Threat Exposure Management (PTEM), from knowing your true attack surface and understanding attacker reality to identifying the exposures that matter most.
How?
Learn how to put preemptive cybersecurity into action.
Explore how to build a preemptive security program, prioritize and reduce exposure, measure meaningful outcomes, and develop the organizational capabilities needed to make it work.
Learn
Keep the knowledge you need close at hand.
Plot out your next steps with The Preemptive Cybersecurity Maturity Index. Explore The Practitioner's Guide to the Dark Web, and quick reference material to dive deeper into the attacker landscape
FAQ
Frequently asked questions
A practical guide to moving beyond reactive security and understanding how preemptive strategies and capabilities can help organizations identify, prioritize, and act on exposure before attackers exploit it.
The handbook is written for both cybersecurity leaders and practitioners looking to understand preemptive cybersecurity strategies, the technical capabilities behind them, and how to apply these within their own security programs.
You can download the digital version as a PDF or EPUB.
No. The handbook is a practical resource for security teams regardless of the tools or platforms they currently use.
The handbook covers thecase for preemptive cybersecurity, Preemptive Threat Exposure Management(PTEM), attack surface management, attacker intelligence, zero-days,ransomware, security metrics, the Preemptive Cybersecurity Maturity Index, andmore, including The Practitioner’sGuide to the Dark Web.
