CoWIN

CoWIN, also known as the COVID-19 Vaccination Portal, is a digital platform designed to manage India's COVID-19 immunisation programme. It enables citizens to register for vaccination, schedule appointments at nearby centres, and download proof of vaccination certificates. The system also supports health officials by tracking vaccine inventory, managing beneficiary lists, and monitoring adverse event reports. By integrating registration, scheduling, and certification functions, CoWIN serves as the central operational tool for the nationwide vaccination drive.

The platform was deployed across all states and union territories of India, providing a uniform interface for vaccine delivery throughout the country. It was used during the phases of the vaccination campaign that prioritised healthcare workers, frontline personnel, age‑based groups, and eventually the general adult population. While specific user counts are not disclosed in the source material, the portal’s role as the sole national registration channel indicates a broad national reach.

CoWIN specialises in public‑health technology, combining real‑time data analytics with secure credential issuance to support immunisation logistics. Its distinguishing attribute lies in being a government‑run system that links citizen identification with vaccine administration records, enabling traceability and accountability. In December 2022, a cyber incident was reported in which threat actors claimed to have accessed administrator accounts of the Andhra Pradesh regional node and offered purported user data for sale on the Dark Web, including patient IDs, phone numbers, and clinic details. The authenticity of the leaked data remained unverified at the time, and the incident highlighted vulnerabilities in administrative access controls.