Are Chrome and Firefox flagging your pages as Not Secure?

From January 2017, Chrome and Firefox started flagging all web pages that accept passwords or credit-card details and don’t use HTTPS as insecure.

This is an important change in browser behaviour. Previously, browsers only flagged pages as insecure when HTTPS itself is broken, for example, when a site’s certificate isn’t valid, or the site uses outdated encryption.

So what does this change mean for site owners and operators?
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