In the screenshot above the interval is set to 4000 (4 seconds) but other times it is set to 1 second, which is enough to close the warning and see it reappearing right away. Avast Free Antivirus finds and removes spyware, blocks future spyware infections, and guards against viruses, ransomware, and other threats. Disk Utility and other apps might show storage categories such as Not Mounted, VM, Recovery, Other Volumes, Other, Free, or Purgeable. That is because these crooks use JavaScript code to push a new alert window so quickly after you’ve clicked ‘OK’ that you cannot normally exit by closing the window or tab. The Storage pane of About This Mac is the best way to determine the amount of storage space available on your Mac. In some cases, you can close the pages normally but other times you can’t. Unfortunately, many Mac users are unprepared for this kind of scams and can be social engineered into paying hundreds of dollars to fix nonexistent problems. Fraudulent tech support companies often based overseas have offered their bogus services to Mac users before as we detailed it in an article last year ( Tech Support Scams: Coming to a Mac near you).Īfter requesting remote control to the machine, the technician will run a scan in the Terminal or perhaps show the Console logs and flag anything in there as a virus or severe infection.