I understand the relation between system security levels and CONCORD (cf. What do all these security levels mean in Eve-Online?).
The Eve-wiki is also very general on that topic: https://wiki.eveonline.com/en/wiki/System_security#Security_level_as_a_difficulty_rating
But as I mostly play PvE at the moment, does a system sec level >0.0 affect…
- rat quality/bounty (NPC pirates), or
- mission bounties?