Internal security

20+
Topics
GS-3
Core paper
Security+DM
Coverage
Updated
Jun 2026

Borders, maritime & cyber

Disaster management

UPSC angle

This GS-3 section blends static frameworks with current affairs. Cover the security challenges, forces and agencies, and the full disaster-management cycle and framework.

Frequently asked questions

What does this hub cover?

Internal-security challenges, terrorism, money laundering, organised crime, border/maritime/cyber security, and the disaster-management framework and specific hazards.

Which internal-security topics are most tested?

Terrorism and counter-terrorism, border management, cyber security, Left-Wing Extremism and the security agencies.

What is the core of disaster management?

The Disaster Management Act 2005, the NDMA/SDMA/DDMA structure and the disaster-management cycle, plus hazard-specific management.

Is this section static or current?

Both — static frameworks plus heavy current affairs (incidents, reforms, global frameworks).