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Distrusted Symantec Certificates are Added to SSL Monitoring.

Written by Tomas Koprusak 96 words | 1 min read Updated Nov 13, 2025
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Google had announced that Chrome would begin distrusting certificates issued by Symantec Corporation’s PKI and the decision is followed by other major browsers.

These are the certificates by Thawte, VeriSign, Equifax, GeoTrust, and RapidSSL that are issued before 1st of December 2017.

And, as the distrust is in effect and visitors are displayed an error on these websites (like ERR_CERT_SYMANTEC_LEGACY), Uptime Robot’s SSL monitoring feature now also considers these errors as a reason for downtime.

Such downtimes are displayed as “Distrusted Certificate” in the dashboard and the feature is live in the Pro Plan.

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Written by

Tomas Koprusak

Product Owner |

He has worked for Sygic as a marketer and co-led the implementation and development of a product acquired from a competitor. He has also worked as a freelance developer, helping clients from various areas. Tomas brings a wealth of industry experience to our team. He spent a few years in the blockchain industry, leading projects and marketing teams at multiple blockchain-based companies. He has presented products and managed deals in more than 10 countries around the world, managed the ICO, and built a successful marketing team at Fuergy that continues to thrive. Tomas managed a product team for the biggest job site in Slovakia, covering development and transformation to a new B2B app. Not only is Tomas skilled at web development, but he also has a deep understanding of SaaS businesses, which makes him an invaluable asset in shaping and leading various projects at UptimeRobot. His focus is always on the continual improvement of our service and user experience. In addition to his professional achievements, Tomas is a devoted father. His personal interests include cycling (he traveled around the whole country of Slovakia), playing guitar (he even played in a band), servicing bikes, music, and enjoying good beer.

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