Eh, for some reason, my mom gets the FBI MoneyPak virus from time to time. Dunno why, but she does have one advantage, she's using Xubuntu on her comp. All that's needed is to just clean out the browser.
If this was Windows, it would literally install and run a virus file locking the computer. As far as I know to do anything to a Linux system (lack for a better phrase, the equivalent to the Windows folder), you have to "sudo" or log in as root (usually not recommended anyway), besides Windows stuff won't work unless WINE is used.
On a sillier side of things, I got e-mails from the senate when I was fighting SOPA a few years ago.... Thunderbird marks them as scams... and it's the legit e-mail too. XD
But also, some people I know are overprotective. Speaking of SOPA, when I use to use Facebook, people told me THAT was a scam and it was made up by the Internet all because it wasn't on "real" News programs.
Again, the school I went to pretty much indoctrinated that "Use Internet Explorer = INTERNET". While I was in school, I used Firefox (even when it was a public beta in summer-fall 2004) and I literally preached how much better it is... throughout the years, only my teacher and one friend used Firefox and they like it more.
I even know people who consider online shopping a scam, not bootleggers on eBay, but even something legit as Amazon or a retail store's site. One even refuses to online game due to the fact that "everyone is a cheater". Even though I explain to her "friends mode" on DS games would be the same if we were in the same room, still I got the "I don't online game, cheaters" argument.
TL;DR, I know too many who are anal or don't know much about computers. -__-