Even though antivirus software seriously reduces the chances of infection, there is a continuous race between malware and antivirus software. Adding Cloud based detection, heuristic and generic detection to the classical antivirus improves the chance that a brand new malware gets detected by your AV, but it doesn’t solve the problem completely.
Always think twice before you execute an unknown program or visit a suspicious website.
These any many other tips can be found in the free eBook “Improve your security”.
All these and many more topics are in the free eBook "Improve your security" available here: www.improve-your-security.org.