The development of system logs must keep pace with the development of the system and enable, for example, the necessary resolution of incidents. In connection with the data system list, we describe for which systems we are responsible for the implementation of the logging. For these systems, we document:
The organization must be aware of the logs that accrue from the use of different data systems, whether generating the logs is the responsibility of the organization or the system provider. Logs record user actions as well as anomalies, errors, and security incidents.
The adequacy of log should be reviewed regularly. If necessary, log should be usable to determine the root causes for system incidents.
Security systems (e.g. firewall, malware protection) often have the ability to record a log of events. At regular intervals, make sure that a comprehensive log is accumulated and try to identify suspicious activity. The log is also useful in investigating disturbances or violations.