The long-awaited SHA-1 deprecation deadline of Jan. 1, 2017, is almost here. At that point, well all be expected to use SHA-2 instead. In January 2011, SHA2 became the new, recommended, stronger hashing standard. In some browsers, some browsers put an X through the HTTPS indicator (Google Chrome) or simply remove the HTTPS portion of the URL (Apple Safari) Some browsers, such as Firefox, dont show any indication.”]
Source: https://www.csoonline.com/article/3143121/moment-of-truth-web-browsers-and-the-sha-1-switch.html