Comprehensive Security Audit and Compliance Automation

Create a robust Bash-based security audit script that comprehensively scans system configurations, identifies potential vulnerabilities, and generates detailed compliance reports. The script must evaluate user permissions, detect unauthorized access patterns, check for outdated software versions, and assess potential security misconfigurations. Implement multiple levels of scanning, from surface-level checks to deep system introspection, with the ability to generate both human-readable and machine-parseable reports compatible with standard compliance frameworks.