About the author: Emmanuel Aigbehi Walstra
Every Sectutor product is written by one person: Emmanuel Aigbehi Walstra, a cybersecurity practitioner and trainer with more than 30 years in the field. He holds the CISSP, CCSP, CEH and CCSE certifications, and he has trained more than 10,000 people in cybersecurity over his career.
A trainer who builds courses
Since 2020, Emmanuel has been Lead Cloud Security Trainer and course developer at TSTC in the Netherlands, where he teaches CCSP, CCSE and CEH. Designing courses and delivering them in the classroom is how the Sectutor materials were shaped. The CCSP Kit and the CCSP Slide Deck are organised the way he teaches: domain by domain, concept before detail, and with questions that test understanding rather than memorisation.
The author of CCSP Excellence
In December 2024 Emmanuel published CCSP Excellence: A Comprehensive Training Guide For The Certified Cloud Security Professional Certification, a 740-page guide to all six CCSP domains (ISBN 9798302710734). The Sectutor CCSP Kit applies that experience to a focused 430-page study book and a 600-question offline question bank, mapped to the current ISC2 exam outline.
Security leadership, not just theory
Before training full-time, Emmanuel worked inside the organisations that cloud security has to protect. From 2008 to 2012 he was Information Security Risk Manager and then Chief Information Security Officer (CISO) at Fortis Bank. Since 2012 he has worked as a freelance virtual CISO (vCISO) and compliance officer through his company, Intellfence BV, for Dutch government and critical-infrastructure organisations, among others.
His work has also reached policy level. In 2005 he contributed to EU studies on digital identity that fed into eIDAS, the EU regulation on electronic identification and trust services. He holds a Master's in Business from the University of Edinburgh, which shows in how the materials link security controls to risk, governance and business decisions.
Why this matters for you
Exam-prep material is easy to copy and hard to get right. Emmanuel writes and maintains Sectutor's content himself, based on years of teaching these domains to working professionals, so the explanations match how real candidates learn and how security is actually run.
What we will not do: we don't publish pass rates, testimonials or pass guarantees, and we never use recalled or leaked exam items. All practice questions are original. Sectutor is not affiliated with, endorsed by, or sponsored by ISC2. CCSP and CISSP are trademarks of their owners.
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