: Introduction to cybersecurity from the perspective of businesses. The business needs cyber security. Cyber security threat landscape. Attacks and malicious software. Actors in cyber security and their roles in cyber security affairs. Authentication and password security. Networking and network security. Cryptography and securing digital information. Web security and cyber ethics. Cybercrime and warfare. Cyber law and legislation. Analysis and management of cyber risks. Cyber security in business and social media. The financial and non-financial implications of cyber risk events on businesses. The cyber security industry and its role as a source of products and services which businesses use to implement and execute their cybersecurity programs.