Here are a few common sense tips for avoiding malware infections:
a) Don’t click links in emails unless you are absolutely certain that both the links and the emails themselves are legit and they were truly sent by the person listed in the “From” field. If there is any doubt in your mind, don’t click!
b) Be careful to avoid installing unwanted third-party add-ons along with free software downloads. This post explains how to safely install free software without installing any bundled junkware along with it.
c) Never run more than one full-time antivirus program at the same time. If you do, they will fight each other and neither of them will protect your system from viruses. Remember, when it comes to antivirus programs, two are NOT better than one – they are actually useless.