Have you ever receive such a pop-up message before?
"This site says....Mouse Move Security Error. Your computer might be infected with Malware. Attackers currently on malware.testing.google.test might attempt to install dangerous programs on your computer that steal or delete your information (for example, photos, passwords, messages, and credit cards.) to fix, please contact customer care at 1-866-430-3008 immediately."
If your answer is YES, it only means that your browser is occupied by an adware or a potentially unwanted program. Mind you, the warning message is not real. Timely removal of the 1-866-430-3008 pop-up is the best way to avoid further damages.