Cyber crime involves illegal activities related to computers and computer networks, including unauthorized access, hacking, viruses, phishing scams, and identity theft. Early computer crimes were often committed by individuals, but as technology advanced, malicious programmers began writing viruses and worms. Cyber law addresses the legal issues surrounding internet usage and access. One case study describes the arrest of two individuals in India who hacked eBay's website to steal credit card information from hundreds of customers and make fraudulent purchases. They were convicted and sentenced to eight months in jail along with fines.