I have not played in Solo since beta, always in open and have only been pirated once by a non-NPC.
As I was in my new ASP Explorer I knew I wouldn't last; Still tried though, until I got to 25% hull requiring me to surrender, giving the pirate what he asked for

If you meet me in the 'Void' and I don't say "Hi", don't take it as me ignoring you, but as me being a shy commander. If you say "Hi" first though, I usually do reply.