I shoot the mining ships from Astral Mining to keep them from harvesting my ore. Before today I shot one a few times, all mining ships warped off and the defense fleet warped in. Today I murdered the ventures one after the other without a problem until I got the last one to 1/2 armor and he warped off. No defense fleet ever came.
I have noticed that since I now have negative standing to the Blood Raider Corp the miners warp off as soon as I land on grid, with the response fleet hot on my tail. I don’t even have to lock anything anymore to get the response fleet.