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Security flaw in Indian certificate authority threatens web trust system

Major tech companies have moved to revoke certificates issued by Bangalore-based eMudhra after discovering weak encryption keys that could allow attackers to impersonate websites. The flaw has prompted intervention from Google, Mozilla, and Cloudflare to protect internet users.

LSN India · 21 October 2026

Security flaw in Indian certificate authority threatens web trust system

Bangalore-based digital certificate authority eMudhra has come under scrutiny after security researchers identified critical weaknesses in eight of its intermediate certificates. The compromised certificates contained insufficiently strong private keys, creating a potential vulnerability that could enable malicious actors to forge digital credentials and impersonate legitimate websites.

The discovery has triggered swift action from the world's major technology platforms. Google, Mozilla, and Cloudflare have initiated measures to revoke the affected certificates and prevent their continued use across the internet. These steps are designed to protect users from potential phishing attacks and fraudulent impersonation of websites they rely upon for secure communications and transactions.

Certificate authorities play a foundational role in internet security by issuing digital credentials that verify website authenticity and encrypt communications between users and servers. The compromise of these certificates undermines the trust infrastructure that underpins online commerce, banking, and sensitive communications. The incident highlights the critical importance of maintaining rigorous security standards across all entities responsible for managing public key infrastructure.

eMudhra, which operates as a licensed certification service provider in India, has become the focus of increased scrutiny following the disclosure. The incident serves as a reminder of the far-reaching consequences when security protocols are inadequately implemented by providers in the digital trust ecosystem, potentially affecting millions of internet users globally.