Well I too was wondering about mac protection and seems in this thread we're back to where we started.
Pepsi or coke?
Right or left?
Up or down?
All I know and what brought me here was weird things happening lately on my home mac.
10.9.1
Especially when I go into MAIL and it hangs for some time before checking-displaying incoming mail.
Never use to do that before. Usually MAIL checked and displayed incoming mail instantly. Or near instant.
I especially noticed this strangness after viewing a lot of online video and youtube video trying to investigate home security systems.
After spending days pourng thru online video, I noticed strange happening on my iMac had started.
So naturally Im looking into a possible virus thing or if I need some sort of mac osx protection.
PS. I do transfer many files between another pc which has windows 8, and my iMac via USB flash drive.
Word files, video files, program files, picture files, music files.
All I know something is going on, bad or harmless I dont know? But when I go into sites like Walmart i see displayed to the right suggestions for security systems. I have never searched a walmart site for security systems in my life. So why do they know Im interested in home security?
Hmmmmm