My SIM stopped working and then my bank account was emptied, what happened and what can I do?

My phone suddenly lost network signal and shortly after, large sums were transferred out of my bank account without my knowledge. Specifically, I want to know how Information Technology Act, 2000 – Section 66C applies to a situation like mine and what the cyber law position in India actually is. If there is a deadline I should be aware of, I need to know that now.

My SIM stopped working and then my bank account was emptied, what happened and what can I do? is governed in India primarily by Information Technology Act, 2000 – Section 66C, Information Technology Act, 2000 – Section 66D and RBI Circular on Customer Liability in Unauthorised Electronic Transactions, 2017. Outcomes in sim swap fraud disputes depend heavily on documentation, so check what you can actually evidence as you read.

This is a classic SIM swap fraud where a fraudster obtains a duplicate SIM using your personal details, deactivating your original SIM and intercepting OTPs to authorise bank transactions.

Section 66C (identity theft) and Section 66D (cheating by personation) of the IT Act apply to the fraudulent SIM issuance and subsequent bank fraud, each punishable with up to 3 years imprisonment.

Immediately report to your telecom operator and bank the moment your SIM loses signal unexpectedly, since this is often the first sign of an in-progress SIM swap attack, and delay materially reduces recovery chances.

Under RBI's zero-liability circular, reporting the unauthorised transaction within 3 working days of the alert entitles you to zero liability and mandatory re-crediting within 10 working days.

File a complaint with TRAI/telecom operator regarding the fraudulent duplicate SIM issuance, as the telecom company may be liable for lax KYC verification during SIM re-issuance.

What this means for you: 1) Contact your telecom provider immediately to report the SIM deactivation and demand a fraud investigation; 2) Call your bank's fraud helpline to block accounts/cards and dispute transactions in writing; 3) File a complaint at cybercrime.gov.in and call 1930 for a possible fund freeze; 4) Escalate to the RBI Ombudsman if the bank does not refund within the stipulated period.

Where the facts are disputed, what usually decides a sim swap fraud matter is the paper trail — dated complaints, acknowledgments and written replies under Information Technology Act, 2000 – Section 66C. You can post the details on the MyVakeel forum for a practising advocate to review, or book a paid consultation with a Bar Council verified lawyer in cyber law.

Disclaimer: This information is for general awareness and does not constitute legal advice. Statutes and their interpretation change, and outcomes depend on the facts of your case. Please consult a qualified advocate before acting on it.