Internal Security forms one of the pillars of GS 3. It includes the following topics
- Linkages between the Development and Spread of Extremism
North East Insurgency
- North East Insurgency
- Assam Issue
- Nagaland Issue
- Manipur Issue
Terrorism
- Role of external state and non-state actors in creating challenges to internal security
- Issue of Drug Trafficking
- Role of media and social networking sites in internal security challenges
- Basics of cybersecurity
- Money-laundering and its prevention
- Linkages of Organised Crime with Terrorism
- Security challenges and their management in border areas
- Various Security Forces and Agencies and their mandate