How do I find information about a Security Update that I was just notified was installed if the App Store Update section does not does not have any record of a recent security update?
I am running OS X 10.10.1. I just got a notification: "Security Update Installed - A new security update was installed on your Mac." The only option to respond to the notification is "Close". There is nothing about a recent security update in the App Store Update section. How would I go about getting information about this security update?
MacBook Pro, OS X Yosemite (10.10.1)