Hacking has evolved over time from a positive term referring to clever programming to taking on a negative connotation of illegal computer access. It now includes spreading viruses/worms, denial of service attacks, and political/hacktivism. The law prohibits unauthorized access and expanded definitions of damage and loss. Law enforcement uses undercover operations, tracking handles, and computer forensics to catch hackers. Penalties depend on intent and damage, with most young hackers receiving probation. Responsibility for security includes developers securing systems, businesses monitoring networks, and users educating themselves.