Cyber security refers to protecting online information and addresses increasing security threats as more people use the internet. The document discusses the meaning of "cyber," the need for cyber security to protect data and systems from viruses and theft. It describes major security problems like viruses, hackers, malware, trojan horses, and password cracking. It provides examples of these threats and offers solutions like installing security suites and using strong, unique passwords. The conclusion hopes to increase audience knowledge of cyber security risks and prevention methods.