Siblu Khan presents on cyber security. Cyber security refers to online security to protect information. With more people online, security threats are increasing. Cyber security is necessary to secure data from theft and safeguard systems from viruses. Major security problems include viruses, hackers, malware, Trojan horses, and password cracking. The presentation provides definitions of these terms and recommends solutions like installing security software and using strong, unique passwords. The conclusion stresses that cyber security is everyone's responsibility and hopes to increase awareness of threats and prevention methods.