Security Updates for iMac mid-2010
Appears my iMac running High Sierra 10.13.6 can't update to Catalina or any of the security updates for that OS, let alone current versions. Is there any method for updating/adding components to allow newer OS on my aging iMac, which is still beautiful, clean and a darn solid machine with lots of memory.
Is there a risk that in its current platform that I could get a nasty virus, even worse a spyware infiltration that will steal my digital footprint? If yes, what's my next step...wipe & sell it for parts?
Thanks!
iMac Line (2012 and Later)