If you are authorized for any applications related to the Stack Exchange sites, it will list the details in the Application menu under the Edit Profile & Settings tab in the main site and Settings tab in the per-site meta.
In the Application page, I'm getting the Connection is Not Secure error for the
http:// images used as the icons in that page.
In plain text:
Parts of this page are not secure (such as images).
http:// images in the page, can be update with
In my Applications page, the following two image files caused the error:
http://i.stack.imgur.com/ATDFd.png- Stack Exchange API Documentation image
http://i.stack.imgur.com/sRnbB.png- Winter Bash image