If you have the latest Mac Os Version High Sierra 10.13.2 then you are safe.
If you have one of these devices with High Sierra 10.13.2:
- iMac: late 2009 or newer
- MacBook/MacBook (Retina): late 2009 or newer
- MacBook Pro: mid-2010 or newer
- MacBook Air: late 2010 or newer
- Mac Mini: mid-2010 or newer
- Mac Pro: mid-2010 or newer
- iMac Pro: 2017
In the High Sierra update is the new security solution already included.
Otherwise if you don't get the new update just wait for more informations, I'll write news int the comments down below
Leon