Above is a great tweet by @varcharr asking a very simple question, but engaging quite a few people. The answers to this tweet astonished me; I truly didn’t know there were so many options to choose from. People said things like elasticsearch, splunk, qradar, rapid7, ELK, AlienVault, Security Onion, LogRhythm, Solarwinds, Elastic SIEM, NetWitness, Azure…