Http message on Safari
I received the following message http://x9x31161131.urgentclient.info pop up on my Safari on MacBook Pro & iPad. The message with it was that my System has detected possible Suspicious Activity & to call a Apple-Certified technician to help resolve the issue on 855-908-3826. I tried to call the number but got a message the it was not office hours? The pop up message has blocked my Safari, even when I quit & open it again the same message comes up.
Any advice would be greatly appreciated>
OBS MacBook Pro (15-inch Early 2008), + iPad