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Discussion in 'OS X El Capitan (10.11)' started by Retromac2008, Dec 5, 2016.
is it still secure and supported?
how long is it going to remain secure?
It is likely supported till autumn 2018.
It is still supported. How long it will remain secure is anyone's guess. Since vulnerabilities are neither intentional nor public knowledge until they're discovered, there is no way of knowing how long any software will remain secure. The only secure computer is one that is never powered on.