An ad of sorts came up on a screen I was using and I cannot get rid of it, nor move to the next screen of the site. Every time I close the tab and then go back to it the same ad comes up. Even shutting down the computer and then restarting does not help.
Quit the application. Force quit if necessary.
Relaunch it by holding down the shift key and clicking its icon in the Dock. From the menu bar, select
Safari ▹ Preferences... ▹ Privacy ▹ Remove All Website Data
to get rid of any cookies or other data left by the server. Open your Downloads folder and delete anything you don't recognize.
It seemed to be working, but as soon as I logged in to the site (sachem library freegal - music downloads) the "ad" came up again, and I can't move on.
Stay away from that site. Either it's been hacked, or it's working as intended.
How to get rid of an ad frozen on a screen
