I held back on El Capitan for a while as generally you don’t want to be on the bleeding edge in production but as macOS Sierra is around the corner, it’s time to get everything tested on El Cap.
Of course back up everything first.
There are 3 pillars in Infosec which support the security of any system.
They are Prevention, Detection and Recovery. These relate directly to the well established Infosec triad of CIA or Confidentiality, Integrity and Availability. (I will go into more detail later).
Backups are the first pillar – Recovery. Recovery is key to ensuring Availability. It is also the easiest and cheapest to implement, so there is no excuse.
The Infosec Noob 