The idea of this auditd configuration is to provide a basic configuration that works out-of-the-box on all major Linux distributions, fits most use cases, produces a reasonable amount of log data, covers security-relevant activity, and is easy to read with different sections and many comments. Sources: Gov.uk auditd rules, alphagov/puppet-auditd#1, CentOS 7 hardening, Linux audit repo, Auditd high-performance Linux auditing. Further rules for PCI DSS compliance and NISPOM compliance are available.