assuming you use good internet hygiene, you can go a long way with older Mac OS, but they will stop 
supporting security updates, usually about 2 yeas, maybe 3 years out. So then you are taking your 
chances.  I can still run most of my older Intel-based programs on OS 10.9.5.However I still have a 
PPC tower at home running 10.7. There is a modern browser called tenforfox ( that is 
secure for older systems. It is a version of Firefox.  the browser is where a lot of vulnerability 

It is worse on a PC. But the idea of getting a real cheap PC to run one program is not a bad one.


Need to leave or subscribe to the Sciart-L listserv? Follow the instructions at