I attempted to install an application this afternoon, and was presented with the below security screen stating:
Security Info Required
To help ensure the security of your Apple ID, you must confirm your password and answer your security questions.
I have never seen this prompt before, and wanted to confirm that it was legitimate and from Apple, and not something triggered by the new app (though it doesn't appear to have installed). I cancelled out of the prompt for now.
O'Reilly First Call