Adapting to Industry Changes for Better Web Security
The CA/B Forum has voted on removing the file-based domain control validation (DCV) method for Wildcard certificates (e.g. *.domain.com) starting Dec. 1, 2021. So why the update?
The change was created in response to the concern that host-based control validation isn’t a strong enough way to demonstrate that someone has control over a domain’s entire namespace. Ultimately, this change improves security for subdomains and therefore, web users overall.
To be prepared and acclimated before the official start date, major CA’s such as DigiCert and Sectigo, will no longer allow file-based DCV for Wildcard certificates starting Nov. 15. After that, users can only use email and DNS validation methods to perform DCV for Wildcards.
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