I would guess that some of that is b/c my developer friends are less likely to need my help with malware, so they don't tell me about it. Another guess but the

I would guess that some of that is b/c my developer friends are less likely to need my help with malware, so they don't tell me about it. Another guess but the rest of it is probably behavior based. Developers are less likely to spend all day on facebook playing flash games, more likely to have flashblock and adblock installed etc..