A secure development framework is a structured set of practices for building software with security built in from the start. It usually covers requirements, secure coding, code review, vulnerability scanning, testing, patch management, and release control so teams can find and fix weaknesses before software reaches users.
This matters because many attacks succeed through preventable flaws such as unsafe input handling, broken authentication, or exposed secrets. Frameworks like NIST SSDF help organizations treat remediation as a controlled process: identify the issue, validate it, prioritize it, patch it, test it, and document the change. In defense, this reduces the chance that a fix introduces new bugs or that risky code is deployed without review. In attacks, the absence of a framework often means slower detection, inconsistent patching, and more exploitable software. Even AI-generated fixes still need the same checks, because a suggested patch is only safe after human review and regression testing.