UPSC Margin is a free study platform offering analytical concept notes, daily current affairs, and mock tests for UPSC Civil Services Prelims and Mains preparation. Built by an aspirant for aspirants.

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All notes, daily current affairs, sectional tests, and full-length mock tests are free during the 3-month open-access window.

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Mock tests follow the exact UPSC Prelims format: 100 questions for GS Paper I with 2-hour timer, +2 marks for correct answers, and -0.67 for wrong answers. Each question has a detailed explanation.

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Concept Notes

Analytical notes built around one principle — if it won't help you eliminate a wrong option or write a better answer, it doesn't belong here.

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Showing 3 notes in Internal Security Clear filter

Internal Security✓ Free

India-China Border: Post-Galwan Dynamics and Border Infrastructure

The Galwan clash (June 2020) was the deadliest India-China border conflict in 60 years. 5 years later, 20+ rounds of military talks have yielded disengagement from 4 friction points — but Depsang and Demchok remain contested. India has invested ₹17,000+ crore in border infrastructure post-Galwan. The Line of Actual Control (LAC) remains the world's most militarized border.

Jun 1, 20268 min read

Internal Security✓ Free

India's Cyber Security Architecture: CERT-In, NCSC, and the Growing Threat Surface

India had 1.4 billion cyber attacks in 2024. The Computer Emergency Response Team (CERT-In) handles incidents but has no prosecution powers. The National Cyber Security Strategy (2020) remains unimplemented. India ranks 11th in the Global Cyber Security Index. UPSC tests the gap between policy and capability.

May 27, 20268 min read

Internal Security✓ Free

Drone Threats and India's Counter-Drone Preparedness: The New Asymmetric Frontier

From the June 2021 drone attack on the Jammu Air Force Station to the proliferation of weaponized quadcopters in Ukraine, drones have rewritten the grammar of asymmetric warfare. India faces a multi-vector challenge: state-sponsored cross-border infiltration via drones from Pakistan, kamikaze drone threats to critical infrastructure, and the dual-use dilemma of civilian drones weaponized by non-state actors.

May 14, 20268 min read