Challenges to internal security have become more pronounced and dynamic in the last couple of decades. Traditional challenges such as terrorism, naxalism, insurgency movements in J&K, Northeast of India etc. Although being curbed to a large extent however still continue to pose as a threat, despite the best efforts by the successive governments. On the other hand, the contemporary challenges such as cyberattacks, digital indoctrination, mob lynching, money laundering, etc. Have now risen to an extent of being a formidable challenge to the government in securing internal security. In this context, this book attempts to address the key issues related to internal security and provides a holistic picture of the challenges. It also outlines the measures taken by the government to tackle the menaces. It facilitates the readers in developing the perspective for providing the analysis that is tested in examinations. Chapters at a Glance: the concept of internal security in India security forces and their mandate border management and internal security linkages between development and extremism naxalism security challenges in Jammu and Kashmir terrorism?a crime against humanity India’s Northeast: a persistent tinderbox organized crimes ? Money laundering and drug trafficking mobocracy and the threat to National security does India need a Cyber warfare force?Challenges to internal security have become more pronounced and dynamic in the last couple of decades. Traditional challenges such as terrorism, naxalism, insurgency movements in J&K, Northeast of India etc. Although being curbed to a large extent however still continue to pose as a threat, despite the best efforts by the successive governments. On the other hand, the contemporary challenges such as cyberattacks, digital indoctrination, mob lynching, money laundering, etc. Have now risen to an extent of being a formidable challenge to the government in securing internal security. In this context, this book attempts to address the key issues related to internal security and provides a holistic picture of the challenges. It also outlines the measures taken by the government to tackle the menaces. It facilitates the readers in developing the perspective for providing the analysis that is tested in examinations. Chapters at a Glance: the concept of internal security in India security forces and their mandate border management and internal security linkages between development and extremism naxalism security challenges in Jammu and Kashmir terrorism?a crime against humanity India’s Northeast: a persistent tinderbox organized crimes ? Money laundering and drug trafficking mobocracy and the threat to National security does India need a Cyber warfare force?