So I've talked to a number of people at various companies about open security work for various areas of detection and response, which is something I don't see really represented in the existing working groups for OSSF. Is there somewhere I can discuss ideas about this?

I see tons of opportunity for guidance to OSS devs that, when implemented, would have massive positive impact for detection and response.

I don't have the experience with such foundations, or the time, to really form a working group, but I'd certainly be interested in discussing this with others.