This document discusses cyber security and defines key related terms. It begins by defining cyber as relating to information technology and the internet. It then discusses the need for cyber security to protect data from theft or misuse and safeguard systems from viruses. The document outlines major security problems like viruses, hackers, malware, Trojan horses, and password cracking. It provides examples of each threat and recommends solutions like installing security suites and using strong passwords. The conclusion hopes to increase audience knowledge of cyber security and awareness of emerging threats.