The rapid expansion of computers, smartphones, digital payments, social media and online services has created new opportunities for communication and commerce, but it has also generated new forms of unlawful conduct. Cyber crime includes offences committed through or against computers, networks and digital information. In India, the Information Technology Act, 2000 (IT Act) is the principal special legislation dealing with electronic records, electronic signatures, computer-related offences and several forms of cyber misconduct. The Act was substantially strengthened by the Information Technology (Amendment) Act, 2008. This research examines the concept and types of cyber crime, the statutory provisions of the IT Act, important judicial decisions, procedural and evidentiary issues, and the challenges faced by law-enforcement agencies. Particular attention is given to Shreya Singhal v. Union of India, Anvar P.V. v. P.K. Basheer, Arjun Panditrao Khotkar v. Kailash Kushanrao Gorantyal, and State of Tamil Nadu v. Suhas Katti. The paper concludes that effective cyber-crime control requires not only legislation but also digital forensic capacity, trained investigators, international cooperation, privacy safeguards and public awareness.