New Delhi, Nov. 3 -- Manufacturers of connected devices will need to prepare for a sweeping new cybersecurity framework that could soon become mandatory across sectors, according to four people aware of the matter.

The proposed recommendations will require all connected devices in critical sectors-from medical scanners and smart meters to transport control systems and industrial equipment-to undergo verification of where they are sourced from, as well as rigorous security testing before deployment, these officials said on condition of anonymity.

The framework is being developed by the National Security Council Secretariat (NSCS), under the Prime Minister's Office, according to the officials.

The move follows a government assessment tha...