Blocking Safari: Potential Thread Detected! http:fixiosappear

After clicking on a link in Safari, I got the popup described below. When I click OK, the popup comes back up. I am able to access other apps but the popup blocks Safari. I have restarted and the problem persists. How can this be removed?

http:fixiosappear.

Potential Thread Detected! warning: YOUR OS Device (iPhone or iPad) May Have ADWARE / SPYWARE VIRUS

Call iOS Tech Support +1-866-601-**** immediately for assistance on how to remove the virus. The call is toll-free.

Possible network damages if virus not removed immediately:

DATA AT RISK:

1. Your credit card details and banking information

2. Your e-mail passwords and other account passwords

3. Your Facebook, Skype, AIM, ICQ and other chat logs

4. Your private photos, family photos and other sensitive files

5. Your webcam could be accessed remotely by stalkers with a VPN virus

MORE ABOUT THE VIRUS:

Seeing these pop-up's means that you have a virus installed on your iOS Device (iPhone or iPad) which puts the security of your personal data at a serious risk. It's strongly advised that you call the number above and get your iOS Device (iPhone or iPad) fixed before you continue using your internet, especially for shopping.

Call iOS Tech Support +1-866-601-**** immediately for assistance on how o remove the virus. The call is toll-free.

<Edited by Host>