One of my colleagues works remotely and used to do occasional testing on a #Mac. However the Mac he had was left lying around since it was stuck on 10.13 and hence has not been getting security updates since November 12, 2020 and has not even been usable with Vivaldi for a long while also.
We are sending him a newer Apple Silicon based Mac (since that would also allow easier testing of internal builds using iOS simulator) but in the mean time I pointed out that he could upgrade his current machine with #OpenCoreLegacyPatcher, despite Apple preventing upgraded via the regular method.
He went all the way from #macOS #HighSierra 10.13, right up to macOS 15 #Sequoia without any obvious issues. Once again, it is silly that Apple is letting these working machines just be wasted.