Open the portal yourself
Type or use a reviewed official government or police route instead of trusting the link in an SMS, email, advertisement or messaging app.
Inspect the hostname
Look-alike spelling, shortened links and requests to install an unknown app are warning signs. The national service itself publishes a fraud warning.
Protect credentials and payment data
Never disclose an OTP or payment credential to a caller. Confirm the challan on the official destination before paying.