What People Actually Say

Real feedback from real clients and students. Swipe or drag to browse.

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Mark Stephenson
Student
"David Bigger's online cyber security courses have been an absolute game-changer for me. As someone with a non-technical background, diving into the world of cyber security felt like deciphering an alien language. However, David's unique talent lies in his ability to turn complex jargon into plain English. His explanations are not just informative; they're downright enlightening. David breaks down intricate concepts into bite-sized, understandable pieces. Thanks to David, I'm now navigating the cyber world with newfound confidence. Highly recommended for anyone looking to demystify the complexities of cyber security."
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Stephanie Cartwright
Student
"Enrolling in David Bigger's cyber security courses has been an invaluable learning experience. What sets David apart is his ability to simplify the difficult topics. His teaching style bridges the gap between complexity and comprehension. He takes the time to explain difficult terms in a way that not only makes sense but also sticks. His analogies and real-world examples turn abstract concepts into tangible knowledge. Thanks to him, I not only understand the terminology but can also apply it in real-world scenarios."
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Christopher Le Port
Student, IT Career Switch (UK)
"David has been my online tutor via IT Career Switch based out of the UK. His video tutorials have been extensively helpful with a sincere, honest, and very thorough approach to providing online distance instruction. His experience and expertise obviously shine through. David provides a lot of knowledge in his videos, and I appreciate his real-world approach with often humorous anecdotes about his own personal journey through the 20+ years of his IT career. If you are thinking about getting into IT, I would highly recommend David as your tutor."
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Matt Henderson
Student
"I have recently started to self-study for the CompTIA A+ accreditation. David's presentation and tutelage has been second to none. Rather than just be a drone who reads from a Powerpoint, David actively engages with his audience and refers to real-world scenarios and prior experiences brilliantly — a skill which is hard to find, let alone use so effectively. Coming out of Core 1 with a 96% on the initial mock is definitely attributed to his delivery and knowledge of the subject area."
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John-Arvydas Jonusauskas
Rapid7 Customer Education
"I worked closely with David on Rapid7 customer education programs. David is extremely technical and very project orientated in all of his assigned tasks. I really enjoyed working with him. David is an asset to any organization interested in cyber security education."
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R. Lawson
Owner, Financial Services SMB
"The Cyber Intelligence Reports have become a standard part of our monthly security review. I'm not a deeply technical person, but the reports are written in a way I can actually understand and act on. We caught an exposed service we didn't know was public-facing. Worth every penny."
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B. Whitfield
CEO, Technology Services Company
"The Competitive Intelligence Reports are something we didn't know we needed until we had them. We're a small shop going up against much larger players — now we can see hiring trends, positioning shifts, and market moves before our customers do. It's like having an analyst on retainer at a fraction of the cost."

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CompTIA Authorized Partner

Authorized to train and certify students in CompTIA's full certification track — Security+, Network+, PenTest+, CASP+/SecurityX, Cloud+, A+, and more.

EC-Council Accredited Training Center

Accredited to deliver EC-Council certification programs including CEH, CHFI, CND, and other industry-recognized ethical hacking and forensics certifications.

Active Certifications
CEH CHFI SecurityX Security+ PenTest+ Network+ CCNA CND
Conference Speaker

Hacker Halted speaker. Practitioner-level presentations on cybersecurity, not just textbook slides — real-world experience on stage.

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