Cybersecurity in national defence: The rising threat landscape

India's digital defenses face a quantum threat. As traditional encryption crumbles, Quantum Key Distribution (QKD) emerges as the future-proof shield. To secure the nation, the armed forces must act fast and embrace quantum-safe tech

- Rahil Patel

India’s rapid digital transformation has significantly bolstered its defense infrastructure, intelligence systems, and battlefield communication networks. This progress, however, has also seen an alarming rise in cybersecurity threats targeting military and government networks.

• Cyberattacks on government entities surged by 138% between 2019 and 2023.

• State-sponsored cyber espionage has escalated, with adversaries targeting military command systems, encrypted satellite communications, and defense networks.

• The 2022 AIIMS ransomware attack compromised 1.3 terabytes of critical healthcare data, while the 2024 Swachhta Platform breach exposed the personal data of 16 million citizens— highlighting the vulnerability of critical national infrastructure.

These incidents underscore a pressing reality: critical infrastructure networks remain vulnerable to cyber threats. While traditional encryption has long served as a primary security measure, the emergence of quantum computing threatens to render these methods obsolete.

The Quantum Computing Threat: A Crisis for Military Encryption

For decades, communication networks have relied on public-key cryptography (RSA, ECC, AES) to secure data exchange. However, quantum computing is poised to break these encryption standards—possibly within the next decade.

How Does This Impact National Security?

• Quantum computers can solve complex cryptographic problems exponentially faster, rendering current encryption useless.

• Hostile entities are engaging in a “harvest now, decrypt later” strategy, storing encrypted critical data today to decrypt it once quantum computing reaches full capability.

• India’s defense and intelligence communication networks, satellite networks, and other critical links will be at risk unless quantum-secure encryption is adopted immediately.