At the centre of India's cybersecurity architecture is the Indian Computer Emergency Response Team (CERT-In), operating under the Ministry of Electronics and Information Technology (MeitY) and mandated by the Information Technology Act, 2000. CERT-In provides the institutional depth for national cyber defence by overseeing incident management, enhancing systemic resilience, and promoting secure digital practices across government, industry, and society. Its work underpins the protection of India's rapidly expanding digital ecosystem and supports confidence in digital platforms and services. Over the last decade, India's digital footprint has grown exponentially. It is driven by rising internet penetration, widespread smartphone adoption, and the rapid expansion of digital public services. By 2025, internet connections in India crossed the milestone of 100 crore, reaching 100.29 crore, compared to 25.15 crore in March 2014. Average monthly data consumption per wireless data subscriber increased nearly 399 times, rising from 61.66 MB in 2014 to 24.01 GB in 2025, among the highest globally. This strong digital foundation has enabled remarkable growth in digital payments. The Unified Payments Interface (UPI) has emerged as the central pillar of India's digital payment ecosystem. In December 2025 alone, UPI processed over 21 billion transactions valued at more than INR27 lakh crore. While this digital expansion has significantly enhanced convenience and inclusion, it has also widened the attack surface for cyber threats. To address these risks, the Union Budget 2025–26 allocated INR782 crore for cybersecurity, underscoring the government's strong focus on securing India's digital infrastructure. In 2025, CERT-In handled over 29.44 lakh cyber incidents, issuing 1,530 alerts, 390 vulnerability notes, and 65 advisories, reflecting large-scale national cyber response capability. In this context, CERT-In's role assumes critical importance as the cornerstone of India's cybersecurity framework. CSIRT-Fin i.e. Computer Security Incident Response Team for the Financial Sector functioning under CERT In, strengthens cybersecurity in the financial sector by enabling coordinated incident response, information sharing, and providing guidance and support for the Banking, Financial Services, and Insurance (BFSI) sector. Similarly, CSIRT-Power works as an extended arm of CERT-In for fortifying the cybersecurity posture of the Power Sector by coordinating and analysing cyber incidents, acting on cyber threat intelligence from CERT-In, taking proactive containment measures based on situational awareness details provided by CERT-In, ensuring cybersecurity audits are carried out and mitigating vulnerabilities as reported by CERT-In's Cyber Swachhta Kendra (CSKs). In today's interconnected digital landscape, cybersecurity is no longer a purely technical concern but a foundational pillar of national security, economic stability, and public trust. The scale and complexity of digital systems demand continuous vigilance, coordinated action, and strong institutional leadership. By combining policy direction with operational readiness, CERT-In not only responds to emerging cyber threats but also anticipates risks, builds resilience, and ensures that India's digital growth remains secure, inclusive, and sustainable. India's rapid digital transformation has reshaped governance, commerce, and citizen services at an unprecedented scale. From digital payments and e-commerce to online public service delivery, digital technology has become integral to everyday life. As digital adoption accelerates, safeguarding cyberspace has emerged as a national priority. With rising instances of online fraud, phishing, ransomware attacks,