Izenpe: Incorrect Unicode characters in Subject

Izenpe S.A. issued a certificate containing incorrect Unicode replacement characters in the Subject fields, specifically in the Locality and Organization fields, which violates RFC5280. The issue was detected after an email from the Chrome Root Program prompted immediate revocation of the certificate. The root cause was traced to a change in the web application that mishandled character encoding. Although post-linting tools were in place, the issuing team failed to act on the warning email, leading to the incident. Remedial actions have been implemented, including the integration of a new linting tool to prevent future occurrences.

1. 2025-02-03 A certificate with wrong encoding in Subject was issued.
2. 2025-02-04 An email from Chrome Root Program warns about the issue.
3. 2025-02-04 The certificate was revoked.
4. 2025-02-05 A new version of the web application was deployed to fix the problem.
5. 2025-04-11 Closure report submitted and all action items completed.