How to find some basic pirates to fight in Eve Online

The latest patch has changed this significantly. There are now only three divisions:
Security - All combat missions.
Distribution - All courier missions.
Astrogeology - All mining missions.

Just my opinion but the only time I've ever found SC's worth the price was when doing higher end COSMOS missions (there's some that enemies continuously regenerate, forget the names), and sometimes doing wormhole rats. They're overkill for any PVE missions (lvl4's shoudl only take a decent BS fit, lvl5's youd' be a heatscore for any pirate in the area), and you'd have to be crazy or stupid to use them in PVP, unless you enjoy being primaried often.