Security people often reach for phrases like "security through obscurity" or "defense in depth," both resting on the idea that strength comes from hiding flaws behind layers of complexity. Real strength comes from clarity instead.

"Form follows function" comes from modernist architecture and design, where an object's shape grows out of its purpose rather than being added on top of it. A designer working this way builds from what the object needs to do, and the function shapes the form. The result tends to be efficient, and often beautiful because of that efficiency.

Security can follow the same logic, growing directly out of how a system is built, visible and intentional from the start. An architect who wants a strong building puts the strength into the frame itself; a secure system works the same way, with its defenses built into the design from the beginning.

Call this "security follows form". A system that's clear and logically built carries its own security as part of that structure, the way a well framed building carries its own weight. Stacking firewalls, access controls, and extra tools on top of a weak underlying design creates blind spots and misconfigurations, and each added layer gives an attacker more surface to search for the one flaw that lets them in.

Strip a system down to what it actually needs, and give each remaining part one clear job. Every interaction stays deliberate and visible, and that combination is what makes a system hard to break.

This is the idea behind Security Brutalism. Most design trends push toward sleek, polished interfaces that hide their inner workings; brutalist security keeps every control and mechanism visible and intentional, so the structure itself carries the defense. A system built this way stays open to inspection, and that openness is what protects it.

A system built on a clear, direct structure holds up under real conditions, because a flaw has nowhere left to hide inside it. That strength comes from simplicity built into the system from the start. Modern security just needs a floor solid enough to stand on when something goes wrong. It needs Security Brutalism.