"16212636405779231114" wants to control Safari and "Low on Memory" pop ups. They keep reappearing

   1. Remove adware installed on your Mac..

       Run the latest release of Malwarebytes for Mac to remove malware/adware, if installed on your Mac.

       For instructions: Install Malwarebytes for Mac v4      Uninstall Malwarebytes for Mac

       Click the “FREE DOWNLOAD” button.

       Click the “Scan ” button. Once done, quit Malwarebytes for Mac.

       Restart the computer and relaunch Safari holding the shift key down.

       Scan for Malware again.

       Additional steps  if necessary.

  2. Reset search engine:    https://support.apple.com/guide/safari/customize-your-search-ibrwe75c2a3c/mac

  3. Reset  Homepage.   https://support.apple.com/guide/safari/set-your-homepage-ibrw1020/mac 

   More info:

   https://support.apple.com/en-my/guide/mac-help/mh43185/11.0/mac/11.0

Hi newmoon186,

Thank you for posting in the Apple Support Communities. I sounds like you're having some issue with pop-ups in Safari, even after clearing your history, correct? If so, we would love to help see if we can get the issue resolved for you. Let's go ahead and follow the troubleshooting steps we've linked for you below.

About pop-up ads and windows in Safari

Please let us know if you have any additional questions. We're always happy to help.

Cheers!