https://www.globalsign.com/en/blog/big-changes-in-the-certificate-authority-industry/
WoSign/StartCom No More
Over a year ago, Google and Mozilla launched an investigation into the certificate issuance practices of WoSign. What it uncovered was a history of bad practices by WoSign and its subsidiary, StartCom. Because both of these CAs were not maintaining expected standards, Google announced this July that it moved to begin distrusting their certificates.
Then, just a few weeks ago on November 17, 2017, it was announced that StartCom was going out of business. Startcom and Wosign certificates have been put on untrusted lists by the big browser firms including Mozilla, Apple, Google and Microsoft.
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