I've constantly had issues with SX virus events always knocking out / mental breaking at least one SX android every time, no matter how many security servers I have. I get that each server provides a certain number of points towards protecting your systems, but I feel like I'm missing something.

My current game I have a "protected Surrogates" number of 210/17
I Have 9 SX4 androids (not all connected to a host at once, but I leave their skymind connection on, I have them moded for different jobs, and only bring them online as needed with skycloud minds as I need them) and 6 pawns (mix of meatbags with VX chips, and T5's that I've mind crushed) I must have 2 devices hooked up that I can't find, but either way, I feel like my security is overwhelmingly high that any SX virus should be stopped dead in it's tracks (much like how RTFuse mod stops Zzzzt Events) Is there some factor I'm unaware of that leaving a security hole?