Certificate authority DigiCert filed an incident report on Mozilla Bugzilla explaining that following an infrastructure migration in February 2025, an internal business system unintentionally became externally accessible, allowing an attacker to create unauthorized accounts and read certain archived customer data [1]. DigiCert stated that only a small subset of archived data was affected, including names, business email addresses, phone numbers, and addresses, with a small number of accounts also containing customer-provided documents such as driver's licenses, passports, or utility bills; certificate issuance systems, CertCentral, and DigiCert ONE were not affected [1]. According to The Record, the company confirmed on October 19, 2026, that the database had been accessed starting June 27 and notified law enforcement; a spokesperson stated there is currently no evidence that the data has been misused [2].
DigiCert Confirms Unauthorized Access to Internal Business System; Some Customer Contact Details and Identity Documents Potentially Exposed
2 min read
- Disclosed
- Nov 1, 2026
- Occurred
- Jun 27, 2026
- Published
- Nov 10, 2026
- Last updated
- Nov 8, 2026
- CVSS basis
- Our assessment
- Attack vector
- Impact
- Data type
- Actor type
- Motivation
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30-second summary
What happened
Who is affected
Industries mainly affected: Technology
What to do nowOur advice
According to The Record, the company confirmed on October 19, 2026, that the database had been accessed starting June 27 and notified law enforcement; a spokesperson stated there is currently no evidence that the data has been misused .
Timeline
Technical details
What Happened
In a Mozilla Root Program compliance incident report on Bugzilla, DigiCert explained that during an infrastructure migration in February 2025, an internal business system not intended for public exposure was moved outside a VPN-restricted segment, inadvertently making its account registration endpoint accessible from the internet [1].
The company stated that on June 21, 2026, it determined the system was externally reachable and that unassigned accounts had been created, deploying an authorization fix on July 2; the system's authorization model had not originally accounted for self-registration scenarios [1].
According to The Record, DigiCert confirmed on October 19 that the database had been accessed starting June 27 and classified it as a reportable incident; a spokesperson stated that law enforcement had been notified and that, to the company's knowledge, there is no evidence the information has been misused [2]. The Register also reported that the company has begun notifying affected customers, though the number of affected individuals has not been disclosed [3].
Scope of Impact
DigiCert wrote that the incident affected only a small subset of archived data, consisting of names, business email addresses, phone numbers, and business addresses shared with DigiCert, and where provided by the customer, potentially driver's licenses, passports, utility bills, or other documents containing names and addresses [1].
The company emphasized that this access did not allow writing records, acting as a validation approver, or issuing certificates; CA systems reside in a separate secure network segment and were unaffected by the external access, and customer login credentials and issued certificates remain secure and valid [1].
Remediation
Vendor guidance
- 1Stay vigilant against phishing and validation requests impersonating DigiCert mitigate[3]
Do not provide certificate order details, identity documents, or login credentials in response to unsolicited messages; contact DigiCert through official channels instead.
- 2Monitor credit and identity activity if notified that identity documents were affected verify[3]
DigiCert stated that it is reviewing affected identity documents and will notify the relevant individuals separately.
References
Official / primary1
- [1]
“This incident affected only a small proportion of archived data. DigiCert’s Certificate Authority (CA) services, CertCentral, and DigiCert ONE were unaffected and remain secure.”
Media2
- [2]
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