Back in the day it was assumed that Mac computers were impenetrable to any virus or malicious code because there were few known instances where the systems were penetrated on a large scale (insert sarcastic meme here). However, we now know the real reason Macs were initially less susceptible to viruses and malware is because Mac had such a small percentage of the market share it simply wasn't financially beneficial to create worms and bugs to infect these systems. My how time