Starting from Chrome 56, credit cards fields not hosted over HTTPS will show a "insecure" warning. 

This will be less noticeable for 56 at first, but will be a large red error in later versions which will chase users away.

Any pages with credit card information must be secured to avoid any warnings being shown on the url bar.

# How do I fix this ?

Enable HTTPS for the entire website or just for the specific pages that require the user to enter their payment information.

This will avoid the error on Chrome and show a **SECURE** status on the url bar again.

# Resources

* [Moving towards a more secure web](https://security.googleblog.com/2016/09/moving-towards-more-secure-web.html)
* [Google Search Console warns of nonsecure collection of passwords with upcoming Chrome browser release](http://searchengineland.com/google-search-console-warns-nonsecure-collection-passwords-upcoming-chrome-browser-release-266486)
* [Chrome 56 to Show Warnings on HTTP Pages with Payment and Password Forms](https://www.bleepingcomputer.com/news/software/chrome-56-to-show-warnings-on-http-pages-with-payment-and-password-forms/)