Cyber security and user privacy is a growing concern as cyber crimes have evolved significantly over time. The document outlines various types of cyber crimes like hacking, denial of service attacks, and software piracy. It also discusses how hacking has progressed from early computer viruses in 1977 to more advanced threats today like encrypted terrorist communications and cloud hacking. Additionally, the document notes that most cyber attacks are aimed at unauthorized access, employee misuse of internet privileges, and virus attacks. It cautions that attackers have become more innovative than defenders and provides tips on protecting user privacy such as using Linux systems and secure browsers.