Announcing Newly Qualified Logs

[Joe DeBlasio]

Several new CT Logs have been approved for inclusion in Chrome, having completed their application and successfully undergone compliance monitoring. The following logs will be marked as Qualified:

• Google Argon2026h1 (https://ct.googleapis.com/logs/us1/argon2026h1/)
• Google Argon2026h2 (https://ct.googleapis.com/logs/us1/argon2026h2/)
• Google Xenon2026h1 (https://ct.googleapis.com/logs/eu1/xenon2026h1/)
• Google Xenon2026h2 (https://ct.googleapis.com/logs/eu1/xenon2026h2/)

CT Logs should not be relied upon for production certificate logging purposes until they have transitioned from Qualified to Usable, which will happen 70 days after they first appear in the v3 CT log list.

Best,

Joe, from the Chrome CT Team

[Chris Thompson]

Several new CT Logs have been approved for inclusion in Chrome, having completed their application and successfully undergone compliance monitoring. The following logs will be marked as Qualified:

• Sectigo Mammoth2026h1 (https://mammoth2026h1.ct.sectigo.com)
• Sectigo Mammoth2026h2 (https://mammoth2026h2.ct.sectigo.com)
• Sectigo Sabre2026h1 (https://sabre2026h1.ct.sectigo.com)
• Sectigo Sabre2026h2 (https://sabre2026h2.ct.sectigo.com)

CT Logs should not be relied upon for production certificate logging purposes until they have transitioned from Qualified to Usable, which will happen 70 days after they first appear in the v3 CT log list.

Best,
Chris, from the Chrome CT Team