What’s the difference between private vs public abuse networks?

Public networks share threat data openly. Public blocklists like Spamhaus are queryable by anyone. Open threat feeds publish indicators that any organization can consume. This broad sharing maximizes protection reach.

Private networks share selectively among vetted members. M3AAWG closed sessions share sensitive intelligence that could enable evasion if public. Private feeds between trusted partners enable deeper collaboration on sensitive threats.

Both serve important purposes. Public sharing provides baseline protection broadly. Private sharing enables discussions about emerging threats, sophisticated attacks, and enforcement actions that couldn't happen publicly. The combination creates layered ecosystem defense.