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eMudhra Exits Global SSL/TLS Business After Weak CA Keys Exposed

Browser trust was revoked after the company revoked eight trivially weak intermediate keys, prompting regulator probes and urgent remediation for devices that do not get regular updates.

Overview

  • The company announced its withdrawal from the global website SSL/TLS certificate business on Thursday after revoking eight intermediate certification keys that researchers showed were trivially reconstructable.
  • Major browser vendors blocked or removed trust in the affected certificates within days, preventing those browser clients from accepting sites certified under the weak keys.
  • Researchers found the flawed keys were produced in April 2025 and reduced to tiny values such as 4, 56 and 115, a magnitude of error that makes private keys reconstructable in seconds.
  • India’s MeitY and CERT-In opened investigations and issued advisories, and experts say remediation is complex because embedded systems, enterprise trust stores and older devices may still trust the compromised chains.
  • eMudhra says no infrastructure breach or customer data loss has been found, the affected SSL/TLS business was about 1% of revenue, and the firm’s shares fell sharply after the disclosure while calls grow for independent audits and tighter CA controls.