India, Oct. 27 -- A Mumbai-based doctor recently fell victim to an online scam that cost him nearly Rs. 11 lakh after he unknowingly shared personal details during a fake e-SIM upgrade process. The case has raised new concerns over growing cyber fraud involving mobile service impersonation.

The incident occurred in September when the South Mumbai doctor received a call from someone claiming to be a representative of his telecom provider. The caller informed him about an ongoing process to upgrade physical SIM cards to e-SIMs and offered to guide him through the procedure. Believing the call to be genuine, the doctor opened his telecom operator's official app and followed the instructions given over the phone.

Soon after, he received a o...