Ange, there is a lot on Google about this little devil. Have a look there for specific removal instructions and to learn all about it.
Do you have SpywareBlaster installed? This will help stop these things getting into your machine.
WPA2 Hack Latest News: How Secure is your Wi-Fi?
Photoshop CC 2018 released with new Curvature Pen and better brush tools
Best kids apps for iPhone & iPad
Comment utiliser Twitter ?