Today when I was scavenging some drones in Asteroid belts I was attacked by a group of Guristas Production frigates. I saw those frigs on dscan before I warped in; the last time I saw those guys they looked blue to me and doesn’t attack me so I thought it should still be the case. However this time they looked red and scrammed me, and I warped out at 50% hull only because they started aggro on my drones and gave me time to kill the tackler.
My standing before Diplomacy is -9.97 to Guristas and -0.01 to Guristas Production and after Diplomacy I am still -5.97 to Guristas but +1.99 to Guristas Production. I had ratted many Guristas but had not ratted too many rats related to Guristas Production.
I looked at the patch notes and found that the patch on January 9th(https://www.eveonline.com/article/patch-notes-for-january-2018-release) is probably the one responsible. They might have fixed the way standing is calculated from “Guristas Production only” to “Guristas and Guristas Production”, which means some players may become red to those Guristas/Blood Raider rats after the patch. I also noticed that there were Freighters tackled and killed by those rats: https://zkillboard.com/kill/67583647/ https://zkillboard.com/kill/67725778/
It looks like a slight nerf to Caldari/Amarr space PVE, since by doing storylines and ratting anomalies/deadspaces you will lose standing towards Guristas and/or Blood Raiders, and you may be attacked by them on gates and belts (some says CCP will give them ability to combat probe players in the future, but that’s no sure).