"Beginning with Chrome 61, the whitelist will be removed, resulting in full distrust of the existing WoSign and StartCom root certificates and all certificates they have issued," O'Brien said. "Based on the Chromium Development Calendar, this change should be visible in the Chrome Dev channel in the coming weeks, the Chrome Beta channel around late July 2017, and will be released to Stable around mid September 2017."

O'Brien advised sites still using certificates issued by WoSign / StartCom to "consider replacing these certificates as a matter of urgency to minimize disruption for Chrome users.

I love my Yubikey Neo and use it many, many times daily on all 3 platforms (Linux, Mac and Windows). My primary OSes are Linux for my personal Lenovo laptop and my work-issued Macbook Pro. I recently upgraded Yubioath Desktop on my Linux box running Linux Mint to v4.0.1. This upgrade touted an improved user-interface amongst other fixes and improvements.. woohoo I thought to myself as although the previous version (3.1.0) was a fair improvement over 3.0.x, it wasn't without its issues.