By the time Firefox 63 hits the scene in the fall, Mozilla officials said the browser will completely distrust Symantec root certificates.

This has come to pass because there have been problems regarding wrong certificates issued by the Certification Authority (CA) run by Symantec.

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These issues forced Google and Mozilla to remove trust in all Symantec TLS/SSL certificate; Symantec then sold its CA business to DigiCert.

While changing companies was a good move on paper, Mozilla said there was no real difference because the same Symantec team would be in charge of certificate issuance for DigiCert. The CA, however, said it would validate all certificates requested through Symantec and issue them through its own infrastructure.

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The Symantec certificates snafu resulted in browser vendors gradually removing trust in TLS/SSL certificates issued by the company, even after the DigiCert acquisition. Trust in older certificates will be removed first.

For Mozilla, this will happen in May 2018, when Firefox 60 will display an untrusted connection warning for websites using certificate issued before June 1, 2016 that chain to a Symantec root certificate.

Starting in January 2018, Firefox 58 has been displaying notices in the Browser Console to warn about the Symantec certificates issued before June 1, 2016, to encourage site owners to replace their TLS certificates. Come October 2018, Firefox 63 will distrust all Symantec root certificates for website server TLS authentication.

“Firefox 60 is expected to enter Beta on March 13th carrying with it the removal of trust for Symantec certificates issued prior to June 1st, 2016, with the exception of certificates issued by a few subordinate CAs that are controlled by Apple and Google,” Mozilla said in a post.

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