Firefox makes use of the Google site advisor. Along with that and using the add-on NoScript will protect you from malware being installed by just
visiting a web page and many other types of malware.
Of course, keeping those very vulnerable/ often exploited programs such as Adobe Reader, Adobe Flash, JAVA,
browsers and OSes updated is necessary, too. Other than that, avoiding downloading free videos, music and pirated programs using P2P is necessary, too.
Today, almost every free program, even those which once were adware free, have adware. Some you can prevent adware from being installed by simply UNchecking
their install and some not....foistware.
Like Quietman7, your advice is also invaluable.
As to downloading free videos, I think this software product, also available as a Firefox add-on may or may not be suspicious, if the display of "Coupons Helper" and "Play strategy games" when right clicking on the add-on icon in the top right of the screen is relevant. It's an invaluable, easy to use program, but the two displays have made me wonder if they signify anything sinister, as the Helper and Games are also downloadable as separate add-ons and I was given no option to install or refuse them, I just noticed them when I right clicked the add-on to see which features exist in the program:
The report described in this link also gives me the impression this program is suspicious. I have since deleted the add-on which didn't hijack my computer in any way, but I'm just not too sure about it:
In contrast, Sandboxie is highly recommended by many people to use in conjunction with other security program to help reduce malware getting into a computer:
I temporarily uninstalled Sandboxie during a malware removal process where certain programs needed to be disabled, as I wasn't sure how to temporarily disable Sandboxie, but I've since found a way and will reinstall it once I get confirmation that my computer is now clean. Nasdaq has been most invaluable in giving me various steps to remove and look out for junk on my computer to remove.
Edited by Castle Robin, 06 March 2014 - 08:54 AM.