Security Update???

[DCIFRTHS]

OS X 10.10.1

I just got a notification, that slid out from the right side of the screen, that a Security Update was installed on my computer. I don't have auto-install turned on.

Did anyone else get a security update automatically installed?

How can I identify what was installed, and where?

 

[Intell]

I suggest reading this: https://www.macrumors.com/2014/12/22/apple-issues-new-security-fix/