Citcassistance.com pop-up windows mainly attack browsers in Mac OS X environment. The intention of all such pop-up windows is to scare you into thinking that your system is deeply infected with malware, so that you would be later on convinced to make a payment in favor of cyber frauds allegedly for fixing your computer. These crooks who spread citcassistance.com pop-ups may tell you about the necessity to perform certain toll-free calls supposedly to Apple representatives. The reality is that these people are the bunch of cyber frauds who simply hunt for your money. We strongly advise that you continue reading this guide that explains how to properly fix your system that got lately infected by adware.