India's Department of Telecommunications (DoT) has mandated that app-based communication service providers implement measures requiring an active SIM card linked to the user's mobile number. This applies to messaging applications such as WhatsApp, Telegram, and Signal, which must comply within 90 days. The amendment to the Telecommunications (Telecom Cyber Security) Rules, 2024, aims to mitigate the misuse of telecommunication identifiers exploited for phishing and scams. The directive requires continuous linkage to the SIM card, and web service instances will log out every six hours, necessitating re-linking via QR code. This is intended to reduce account takeover risks and ensure that accounts are linked to KYC-verified SIMs. The DoT also announced a Mobile Number Validation (MNV) platform to combat identity fraud related to unverified mobile number associations.