Wouldn't any NPC decker who sees 301 nodes go either "we've got a decker who thinks he's smart in the building - send in the dogs" or "WE'VE GOT OVER 300 INVADERS SEND IN THE CANNONS"?
If he was clever, he would seed them through the building to scatter security, not keep them on him to concentrate it when they notice him. Just my opinion.
@ZeConster, probably they would be like "We have some unusual activity over here, send some guards to go check it out."
@Silence Security doesn't rely on matrix perception to find someone anyway.