To minimise risks of many of these bugs, try using Mozilla Firefox browser. It is totally free to download and really easy to use.
Most of the internet spam & viruses are written to invade Microsoft IE, but are easily blocked by Firefox, which is Linux based.
I have been using Firefox for a few years now, with AVG (free) antivirus and use AdAware (free) anti-spyware. I have not had any serious infection since, though I had several whilst running Microsoft IE.