A Digital Signature Certificate (DSC) on a FIPS-certified USB token carries the exact legal equivalence of your handwritten physical signature under Section 4 of the Information Technology Act, 2000. If your USB token is misplaced, stolen, or suspected of unauthorized access, taking immediate security action is essential to safeguard your corporate and personal liabilities.

Step 1: Request Immediate Certificate Revocation

The first and most critical action is to cancel the legal validity of the certificate:

  • Contact Your Certifying Authority (CA): Immediately inform the CA that issued your DSC (eMudhra, Capricorn, or Vsign) or reach out to your Registration Authority partner (DSC.in.net).
  • Submit Revocation Form: Provide your certificate serial number, name, and registered email address. The CA places your certificate on the public Certificate Revocation List (CRL) within minutes.
  • Legal Protection: Once listed on the CRL, any document digitally signed after the revocation timestamp is deemed legally void and invalid by government servers.

Step 2: Change Passwords on Linked Government Portals

Because physical access to your USB token could be paired with compromised login credentials, update passwords immediately across:

  • MCA21 Portal: V3 login password and registered email verification.
  • Income Tax e-Filing: Reset login password and de-register the old DSC certificate under profile settings.
  • GST Portal: Update portal credentials and remove the certificate mapping.
  • Corporate Banking / PFMS: Alert corporate bank branch managers to freeze bulk RTGS signatory permissions.

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Emergency DSC revocation and fast-track replacement issued within 24 hours.

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Step 3: Apply for a Fresh Replacement DSC

Revoked DSCs cannot be un-revoked or reactivated. To resume business filings and bidding:

  • Complete a fresh paperless eKYC application with a new FIPS 140-2 USB token (ePass2003 or ProxKey).
  • Complete the short 20-second video verification.
  • Re-register the new certificate on all government portals using the new token PIN.

At DSC.in.net, we prioritize lost-token emergency replacements with expedited video approval and same-day token dispatch.