Spoiler alert: agent based. Ran it before, was a maint burden of the first order.
What was it specifically that made it a "maint burden of the first order?"
I have built from ground up 2 SIEMS.
Never had a single issue with indexes, though we only ingest 500k+ events per day for ~endpoints.
Don’t use email but notifications by Slack. Never had it fail in one year.
Honestly, I almost feel bad for the amount of value I’m getting for free. So I’m happy to give back: made an integration that recovers all Google Workdspace events (https://github.com/avanwouwe/wazuh-gworkspace) if anyone’s using Wazuh? I also plan on publishing my Chrome extension integration (behavioral analysis and malware and shadow it detection) in a couple of days!
What SIEM did you move to that was less of a burden?