I have asked for anti-malware tools, not for opinions on how secure linux is. For those who recommended me some tools I thankfully replied. Well, have you been browsing yahoo lately? Because a few days ago it was compromised by hackers who then added a adobe flash exploit to yahoo.com.. this is one example of many. Ebay, amazon, ESL, tons of banking websites, news and entertainment websites were already compromised and modified with drive-bys. It is not like you need to download and execute "hacking-virus.exe" these days to get infected. And if you then take in concern that there are also linux trojans/stealers/bots/... out there, the rate of infection is increasing and definitely there.