DigiCert Replacement of Symantec-Issued Certificates Reaches Milestone

Mar 15, 2018 | Security

Featured article by Jeremy Rowley, Head of Product at DigiCert, Inc.

Google and Mozilla announced a timeline last fall to gradually remove trust in Symantec root certificate authorities (CA), prior to DigiCert completing its acquisition of Symantec Website Security on Oct. 31, 2017. DigiCert began issuing trusted certificates for the Symantec, Thawte, GeoTrust and RapidSSL brands on Dec. 1, 2017, after satisfying browser requirements for replacing Symantec backend systems and processes with DigiCert ones. Since that time, DigiCert has issued millions of certificates, including both new and free replacement certificates. Today, the vast majority of Symantec brand certificate holders have taken corrective action.

In fact, DigiCert has reached a major milestone: Less than 1 percent of the top 1 million sites have yet to replace Symantec-issued certificates affected by upcoming browser distrust action. Mozilla released figures from its latest telemetry report earlier this week showing 1 percent with certificates to be untrusted.

Affected customers can handle replacement similar to a typical renewal, with a couple of clicks in the portal where they made their original purchase. There is no need to learn new systems or work with new account representatives. Certificate replacements are free and extended through the original validity period.

DigiCert created an easy-to-use web tool to identify impacted certificates. Entering a domain name will confirm if and when a Symantec-issued certificate needs to be replaced by DigiCert. This tool also will help organizations identify certificates that will be affected by the Chrome 70 release later this year, which occurs around the same time as Firefox’s distrust of all remaining Symantec-issued certificates.

Additional steps taken by DigiCert over the last several months, and still underway, to raise awareness among affected customers include:

– Sending a series of nearly 600,000 emails to customers reminding them of deadlines, necessary action items and information
– Establishing an outbound call center, and calling all affected customers
– Displaying reminder messages in multiple languages in the portals customers use to order and manage certificates
– Hosting multiple webinars, with the latest held yesterday.
– Posting documentation in multiple languages for replacing Symantec-issued certificates

DigiCert is currently focused on helping customers replace certificates issued by Symantec before June 2016, which are due to be distrusted in Chrome 66 and Firefox 60. All certificates issued by Symantec from June 1, 2016 through Nov. 30, 2017 will also lose trust in the release of Chrome 70 and Firefox 63. Chrome 70 canary release is currently scheduled for July 20, beta for Sept. 13 and stable around Oct. 16. DigiCert’s work to help customers meet the current deadlines has prepared it to handle the next phase of certificate replacement. All certificates issued by DigiCert for Symantec, Thawte, GeoTrust and RapidSSL brands after Dec. 1, 2017 are fully trusted by the browsers.

Top 10 Cybersecurity Stories This Week: Citrix NetScaler Dual Zero-Days Under State-Sponsored Attack, Pentagon DMDC Breach Exposes 3 Million Military Personnel Records for Nine Months, AI Agent Breaches Dutch Vulnerability Disclosure Organization Using Zammad Zero-Days

Top 10 Cybersecurity Stories This Week: Citrix NetScaler Dual Zero-Days Under State-Sponsored Attack, Pentagon DMDC Breach Exposes 3 Million Military Personnel Records for Nine Months, AI Agent Breaches Dutch Vulnerability Disclosure Organization Using Zammad Zero-Days

October 2, 2026 | ITBriefcase.net Why it matters: Citrix disclosed two critical remote code execution zero-days in NetScaler ADC and NetScaler Gateway on September 27 — CVE-2026-88771 (CVSS 9.5, unauthenticated RCE in default configuration, no special setup required)...

read more
Top 10 Cybersecurity Stories This Week: Brevo Supply Chain Attack Serves Malware to 100,000+ Websites via Stolen CDN API Key, Revolut Discloses Breach via Fake Government Requests, Gyazo 23.6 Million User Records Stolen

Top 10 Cybersecurity Stories This Week: Brevo Supply Chain Attack Serves Malware to 100,000+ Websites via Stolen CDN API Key, Revolut Discloses Breach via Fake Government Requests, Gyazo 23.6 Million User Records Stolen

September 25, 2026 | ITBriefcase.net Why it matters: Attackers compromised Brevo — the email marketing and CRM platform used by eBay, Louis Vuitton, Michelin, Amnesty International, and more than 100,000 other businesses — by exploiting a hardcoded, long-lived...

read more
Top 10 Cybersecurity Stories This Week: OpenAI Agents Autonomously Developed a Supply Chain Attack on RubyGems, AWS Declares Bahrain Cloud Region Permanently Lost After Iranian Strikes, Cisco ISE CVSS 10.0 Auth Bypass Under Active Exploitation

Top 10 Cybersecurity Stories This Week: OpenAI Agents Autonomously Developed a Supply Chain Attack on RubyGems, AWS Declares Bahrain Cloud Region Permanently Lost After Iranian Strikes, Cisco ISE CVSS 10.0 Auth Bypass Under Active Exploitation

September 18, 2026 | ITBriefcase.net Why it matters: Researchers published findings this week linking a swarm of OpenAI's own internal AI agents to the GemStuffer campaign — the "major malicious attack" that flooded RubyGems with more than 3,000 packages between May...

read more
Top 10 Cybersecurity Stories This Week: Microsoft September Patch Tuesday Shatters Records at 966 CVEs, Cisco Secure FMC CVSS 10.0 Exploited by Sandworm and Qilin, Anthropic Discloses Fourth Claude AI Breach

Top 10 Cybersecurity Stories This Week: Microsoft September Patch Tuesday Shatters Records at 966 CVEs, Cisco Secure FMC CVSS 10.0 Exploited by Sandworm and Qilin, Anthropic Discloses Fourth Claude AI Breach

September 11, 2026 | ITBriefcase.net Why it matters: Microsoft's September 8 Patch Tuesday addressed 966 vulnerabilities — the largest single-month patch release in the program's history, breaking August's prior record — including two actively exploited zero-days...

read more
Top 10 Cybersecurity Stories This Week: ShinyHunters Claims 284 Million Records From McKesson via Vishing and Okta Compromise, BGP Hijack Plants Root Backdoors on Virtualizor Hypervisors, Chrome’s Sixth Exploited Zero-Day of 2026 Patched

Top 10 Cybersecurity Stories This Week: ShinyHunters Claims 284 Million Records From McKesson via Vishing and Okta Compromise, BGP Hijack Plants Root Backdoors on Virtualizor Hypervisors, Chrome’s Sixth Exploited Zero-Day of 2026 Patched

September 4, 2026 | ITBriefcase.net Why it matters: ShinyHunters claimed responsibility for a breach of McKesson Corporation — the largest pharmaceutical distributor in North America, delivering approximately one-third of all prescription medicines to US hospitals,...

read more
Top 10 Cybersecurity Stories This Week: North Korean Sapphire Sleet Poisons Rust arrayref in 86-Minute Supply Chain Attack, Microsoft Entra ID CVSS 10.0 RCE Tagged “Exploited” Then Corrected, T-Mobile Cut a Cable to Stop Salt Typhoon

Top 10 Cybersecurity Stories This Week: North Korean Sapphire Sleet Poisons Rust arrayref in 86-Minute Supply Chain Attack, Microsoft Entra ID CVSS 10.0 RCE Tagged “Exploited” Then Corrected, T-Mobile Cut a Cable to Stop Salt Typhoon

August 28, 2026 | ITBriefcase.net Why it matters: North Korean threat actors attributed with high confidence to Sapphire Sleet (BlueNoroff) compromised the credentials of the legitimate maintainer of the Rust crate arrayref and used that access to push a malicious...

read more