Notice Regarding the Temporary Suspension of the SSL/TLS Server Certificate Issuance Service
Cybertrust Japan, Inc. (provider of the affected service), SECOM Trust Systems Co., Ltd. (the root certification authority that carried out the issuance procedures for the new intermediate CA certificate)
SSL/TLS server certificate issuance service, new intermediate CA, SSL/TLS server certificates issued by the new intermediate CA
Under Apple’s revised rules dated 1 August 2026, Apple’s prior approval became a requirement when issuing certificates to an externally operated CA, but there were deficiencies in the procedures for issuing the new intermediate CA certificate.
Customer support and other related costs are expected to arise, but the amount of the impact on the Company’s results is still under review.
The delay in commencing service provision through the new intermediate CA may affect the Company’s results. The amount of the impact is still under review, and no revision to the earnings forecast has been disclosed.
Company response
The SSL/TLS server certificate issuance service is scheduled to be temporarily suspended from 15 September 2026. Certificate issuance using the old intermediate CA will continue through 14 September 2026.
Switching to a certificate issuance framework using the old intermediate CA; reissuing and replacing the affected certificates, individually contacting affected customers, and strengthening the support framework; considering and preparing an alternative service delivery scheme; analyzing the root cause and considering measures to prevent recurrence
The procedure for obtaining approval for the new intermediate CA from STS will continue. Until approval for the new intermediate CA is obtained, preparations will continue so that an alternative service can be provided, allowing certificates to be issued from an intermediate CA operated by STS.
If matters requiring disclosure arise as the review of the amount of the impact progresses, they will be announced promptly.
| Item | Details |
|---|---|
| Event name | Notice Regarding the Temporary Suspension of the SSL/TLS Server Certificate Issuance Service |
| Date of occurrence | 31 August 2026 (the date on which the procedural deficiencies were identified; the actual date the deficiencies occurred is Not disclosed) |
| Date recognized / date notice received | 31 August 2026 (the date on which the deficiencies were identified) |
| Subject Entity | Cybertrust Japan, Inc. (provider of the affected service), SECOM Trust Systems Co., Ltd. (the root certification authority that carried out the issuance procedures for the new intermediate CA certificate) |
| Target Locations / Products | SSL/TLS server certificate issuance service, new intermediate CA, SSL/TLS server certificates issued by the new intermediate CA |
| Cause | Under Apple’s revised rules dated 1 August 2026, Apple’s prior approval became a requirement when issuing certificates to an externally operated CA, but there were deficiencies in the procedures for issuing the new intermediate CA certificate. |
| Amount of Impact on Business Performance | Customer support and other related costs are expected to arise, but the amount of the impact on the Company’s results is still under review. |
| Impact on Earnings Forecast | The delay in commencing service provision through the new intermediate CA may affect the Company’s results. The amount of the impact is still under review, and no revision to the earnings forecast has been disclosed. |
| Suspended operations | The SSL/TLS server certificate issuance service is scheduled to be temporarily suspended from 15 September 2026. Certificate issuance using the old intermediate CA will continue through 14 September 2026. |
| Measures to prevent recurrence | Switching to a certificate issuance framework using the old intermediate CA; reissuing and replacing the affected certificates, individually contacting affected customers, and strengthening the support framework; considering and preparing an alternative service delivery scheme; analyzing the root cause and considering measures to prevent recurrence |
| Outlook | The procedure for obtaining approval for the new intermediate CA from STS will continue. Until approval for the new intermediate CA is obtained, preparations will continue so that an alternative service can be provided, allowing certificates to be issued from an intermediate CA operated by STS. |
| Planned follow-up disclosure | If matters requiring disclosure arise as the review of the amount of the impact progresses, they will be announced promptly. |
Items this document does not state (13)
These are items the company does not state in this document. We do not leave them blank, nor fill them in from other sources or by inference.
The reasons the company gives
The company's own explanation, not something inferred from the numbers.Although Apple’s revised rules require Apple’s approval before certificates are issued to an externally operated CA, there were deficiencies in the relevant procedures, and approval from Apple and Google has not yet been obtained.