# Security Controls * Reactive Security * Firewalls * Antivirus * Proactive Security * Asset Inventory – What do we want to protect? * Risk Management – Evaluate all potential risks and likelihood * Security Controls – Hardware and software solutions we can implement to improve security posture. * NIST Categories – Publication 800-53 * Technical or logical – a system: firewall, access control system, IPS, WAF * Operational or Administrative – Fixed with people. Security guards. Training * Management controls – High level overview. Policies and procedures. Documents. * Preventative controls reduce risks * Detective controls notify on risks * Corrective controls – late fix. Backup and restore. Patching * Physical controls – locks, doors, fences. Prevents. * Deterrent – Discourages. Warning signs. Security guards. Cameras. * Compensating – Substitute. Thoroughly documented and approved. * Evaluating Security Control * Quality control. Done at factory. * Verification – Compliance testing process. Does it meet requirements? * Validation – Does it do what we want it to do? * Assessments – Subject a product to a checklist of requirements * Evaluations – Subjective. Is it properly doing it’s job? * Security Audits – More formal evaluations. * Continuous monitoring. Continuous risk assessment. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://cysa.coantech.net/security-controls.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.