Im in class so a long answer is there is no issue here.
I do not run a secure certificate on the server (https) which would be needed to encrypt all the text on the pages (like you would see in a shopping cart).
A couple years ago google started playing security nazi on all sites that had any form (like the forum text box) and were not running a encrypted cert (which requires an annual fee).

our postings are not publicly available outside the site news forum due to passwords.
I will not be installed a cert anytime soon on the server as I do not collect any sensitive financial data.

If this is a concern for some, then I understand.
However, that's why you are seeing the message.