I need to know that my mac was working perfectly fine till today. I wanted to visit same sites which i have visited yesterday in safari,and they were working perfectly fine, so today when i tried to open the page. It opened for few seconds and then went to another page of ads, where i couldn't see any cross option to close this ad. I have tried other sites to check ,but sadly same thing occurred. Only main site like mac,Facebook and this site working fine.
Need to fix this issue. Is there any virus. I didn't install anything in mac.