New Delhi, Oct. 21 -- CERT-In has issued a security advisory warning that eight intermediate certification authority (CA) certificates associated with eMudhra have been compromised, raising concerns about the security of encrypted internet communications and the authenticity of website certificates.

The advisory, CIAD-2026-0050, issued on 21 October 2026, says the incident involves weak cryptographic private keys that could potentially allow attackers to issue fraudulent TLS certificates, impersonate legitimate websites and intercept or modify encrypted communications.

The Indian Computer Emergency Response Team (CERT-In) said eMudhra Limited, an India-based certification authority, reported that private keys associated with eight inter...