Security is a technical problem with a social surface.

Most writing about it picks a lane: here’s the supply chain attack breakdown, here’s the geopolitical think-piece. I write this newsletter because the interesting stuff often lives in the intersection between those two: the human decisions that create the vulnerability, the technical constraints that shape the policy, the cultural assumptions baked into systems that were supposed to be neutral.

This is a newsletter about security, privacy, and technology as forces that reshape how organizations work, how societies function, and how people make decisions under uncertainty. The pieces range from deep technical analysis to cultural commentary, often in the same issue.

I’m a security practitioner who works at the gap between how technical systems are designed and how people actually use them.

The audience is people who do the work: security engineers, engineering leaders, and anyone who thinks carefully about the long-term implications of what they build and defend.

If you are looking for rigorous, opinionated writing grounded in real systems and real tradeoffs, you are in the right place.

User's avatar

Subscribe to João Penteado

Security engineer by trade, curious about most everything else. Based in Japan. I write about digital security, tech, and where it intersects with society. Technical deep dives, industry commentary, and the occasional strong take. Views are my own.

People