Jacco Meijer, CISSP
Solutions and Security Architect, based in Utrecht, The Netherlands
Latest Blog posts
On IT Architecture and Cyber Security
- Jacco Meijer
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- Mar 23, 2026
- What we do is not the same as how we do it
Six failure modes that follow when that distinction collapses. A diagnostic instrument for architects who need to know not just what went wrong but which mismatch drove it.
- Jacco Meijer
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- Mar 16, 2026
- Having a capability and being able to exercise it are not the same thing
Formal capability is not real capability. A conditions layer for testing whether a capability holds in the environment it must actually operate in.
- Jacco Meijer
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- Mar 9, 2026
- Capability is not confused. It is occupied
Most capability work fails before it starts because it does not ask which type of claim it is making. A diagnostic language for enterprise and security architects.
- Jacco Meijer
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- Feb 2, 2026
Four architects and the limits of personality
Why legal, empirical and behavioural limits keep personality tools and role frameworks apart
- Jacco Meijer
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- Jan 5, 2026
Four architects and why we need all of them
What sounds like a casual observation is actually a structural truth: architecture isn’t about personalities, but about competing stances your organisation cannot afford to miss.
- Jacco Meijer
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- Oct 22, 2025
What cyber security mistakes do organizations still make?
A brief check on how the AI response for this question compares to real life experience.