Excessive Use of Self-Modifying Code

Self-modifying code changes its own instructions while running, which can be used for obfuscation or performance optimization. However, excessive use creates a complex and unpredictable codebase that is hard for developers to follow, test, or debug, as the logic at runtime differs from the source code. This complexity directly undermines security. It slows down vulnerability discovery and patching, as security reviews and static analysis tools struggle with the shifting code. This environment makes it easier to accidentally introduce new flaws and harder to ensure the software behaves as intended, increasing overall risk.