Amazon Trust Services: Additional CRL Characteristics Desired in CP/CPS
Amazon Trust Services (ATS) disclosed an incident regarding the lack of clarity in their Certificate Policy (CP) and Certification Practice Statement (CPS) about the behavior of their Certificate Revocation Lists (CRLs). The issue arose when a third party reported that ATS's CRLs sometimes included backdated 'thisUpdate' timestamps to account for clock skew. ATS confirmed this practice and committed to updating their CP/CPS to provide clearer information about CRL behavior. The updates were completed by January 30, 2026, and ATS plans to continue evaluating their documentation in response to inquiries.
- ATS received a report questioning the behavior of their CRLs.
- ATS updated their CP/CPS with additional clarity regarding CRL behavior.
- DigiCert — ATS disclosed the incident and outlined the timeline of events.
- DigiCert — ATS confirmed that they are on track to complete CP/CPS updates.
- DigiCert — ATS reiterated their commitment to complete CP/CPS updates by the due date.
- DigiCert — ATS reported that all action items have been completed and requested closure of the report.