A SIEM or Security Information and Event Management is only as good as its logs. People can think of logs as the fuel for the engine. Without logs (log management), the SIEM will never be useful. Selecting the right types of logs to ingest in your SIEM is a complex undertaking. On one hand, it is easy to say “Log it all!” but you will inevitably reach the glass ceiling of your SIEM, which will either be your licensing or you will cap the performance of the SIEM hardware.