Around one year ago, Google Chrome announced that they would begin marking all sites that are not encrypted with HTTPS as “not secure” in their browser. This move essentially started shaming websites by displaying a “Not Secure” marker in the address bar. However this happened only when the site collected passwords or credit card info.
Later in 2017, they further announced their next steps towards a more secure internet. In this step the warning came up in two more situations: when people enter data on an HTTP page, and on all HTTP pages visited in Incognito mode.