Minimalist Brutalist Security Program

Ron P. asked: What are the most basic and essential things you can focus on to ensure strong security, following the brutalist approach? How would you use them to create a security strategy? Or, can you use them?

Here is a simplified brutalist security program stripped to the essentials, each one doing real work. Use it to evaluate your current posture, find missing fundamentals, cut unnecessary complexity, or build from scratch.

The Basics

1. Minimize Attack Surface

Keep a complete asset inventory, remove anything unnecessary, and harden what remains. The less there is to attack, the less you have to defend.

2. Identity and Access Control

Default to no access. Grant it only when needed, only as much as needed, and revoke it when the need ends. Admin access should be rare, time-bound, and logged. Segment the network so a compromised account cannot reach everything.

3. Data Security

Classify sensitive data, encrypt it, and control who can reach it. Test your backups regularly, because an untested backup is not a backup.

4. Patch and Vulnerability Management

Scan continuously and patch fast. Known vulnerabilities in unpatched systems are easy wins for attackers, and there is no good reason to hand them out.

5. Incident Response

Have a simple, practiced plan. Know how to detect, contain, and recover before the incident happens, because you will be attacked and a practiced response beats improvisation every time.

6. Continuous Assessment

Scan, test, clean up, and re-check on a regular cycle. Remove what is no longer needed. The environment changes, and your controls need to keep up.

Security Strategy

For a full strategy check "A Security Brutalist Strategy."

The objective is straightforward: protect systems, data, and users through hardened, clearly defined controls with as little complexity as possible. Every strategic decision should reduce attack surface, enforce access discipline, or improve your ability to recover when something breaks through.

Identity is the first perimeter. Default-deny access, enforce least privilege, require MFA everywhere, and treat admin credentials as high-value targets that need tight controls and a short leash. Combine that with network segmentation so a single compromised account cannot move freely across the environment.

Data protection follows from access control. Limit who can reach sensitive data, encrypt it at rest and in transit, and keep tested backups that are stored separately from the systems they protect. Patching closes the gaps that make all of the above easier to bypass, so scan continuously and treat high-severity vulnerabilities as urgent by default.

Incident response ties everything together. A practiced plan with clear roles and tested playbooks is what determines whether a breach stays contained or spreads. Run tabletop exercises and technical drills regularly, not to check a compliance box, but because the response you rehearse is the one that holds under pressure.

General Security Policy

This policy applies to all employees, contractors, and systems. Its purpose is to define the minimum rules required to maintain a survivable security posture.

Access to systems and data is granted on a need-to-know basis, must be authenticated and logged, and is never shared. All systems must be approved, inventoried, hardened, and kept current. Sensitive data must be encrypted and kept off personal or unmanaged devices. Logs must be collected, stored securely, and protected from tampering. Any security incident must be reported to the security team immediately, without delay or alteration.

Violations of this policy may result in disciplinary action, revocation of access, or legal action depending on the severity.