Designing a secure infrastructure for smart cities requires addressing the unique challenges posed by interconnected systems. Begin by segmenting networks to isolate critical infrastructure from public-facing services, ensuring that a breach in one area does not compromise the entire system. Use secure communication protocols, such as HTTPS and MQTT with encryption, to protect data transmitted between IoT devices. Deploy robust access controls and regularly update device firmware to address vulnerabilities. Monitor network traffic with AI-driven tools to detect anomalies and respond to potential threats in real-time. Establish strong identity and access management (IAM) protocols, granting permissions only to authorized personnel and devices. Smart grids, transportation systems, and public utilities demand special attention—use specialized security solutions to safeguard against potential sabotage or data breaches. Implement disaster recovery plans to ensure continuity in the event of a cyber incident, including Stay Secure Today backups of critical data and simulations to test response strategies. Educate city employees and contractors on cybersecurity best practices to reduce human error. Lastly, involve the public by promoting awareness campaigns that encourage citizens to adopt secure practices when interacting with smart city services. This comprehensive approach ensures that smart cities remain innovative while prioritizing safety and reliability.