Sites peddling Viagra pills are notorious for harboring malware programs.
How to be aware of Malware infected sites?
First thing is to switch your internet browsers to either Mozilla FireFox or Google Chrome. These two browsers are relatively fast in getting an updated list of harmful sites.
Secondly, update your PC anti-malware and anti-virus definition.
Lastly, only browse to sites familiar to you but even if well-known site get infected, you will get upfront warning if you practiced the two steps mentioned above.
Recommended reading:
* opinionpinoy.blogspot.com infected with malware from dir.davaoblogs.com