I am solo mining. Not too worried because there is little to find on my single purpose (mining) rig. Wanted to share my experience as a cautionary tale for others.
I am behind a router. Access to my rig is blocked, except, and this is a big one, the plug-n-play had been turned on by (I think) a virus or exploit of some sort. So it's just another example of mining should probably be done on an isolated machine with separate wallets.