Cyber security is important to protect networks, computers, programs and data from attacks. The document discusses the costs of cyber security to businesses and the world economy. Larger businesses and those with more sensitive data require more spending. Costs include products, services, installation, audits and vary based on company size and data. The cyber security index ranks African countries' commitment to cyber security. Tanzania ranks 5th in the maturing stage, up from 12th in 2017, showing improving cyber security framework and regulations.