Preventing unauthorized modifications to lighting systems is crucial for safety, security, and energy efficiency. The most common and effective strategies involve a multi-layered approach. Firstly, implementing strict physical access control is fundamental. This includes using locked electrical rooms, tamper-proof screws on fixtures and control panels, and secure enclosures for sensitive components like dimmers and smart controllers. Only authorized personnel should have keys or access codes. Secondly, leveraging technology is key. Modern networked lighting control systems can be programmed with user permissions, ensuring that only qualified individuals can alter settings, schedules, or light levels. These systems also maintain detailed audit logs, recording who made changes and when, which acts as a powerful deterrent and an invaluable tool for troubleshooting. Thirdly, establishing and enforcing clear policies and compliance standards is essential. Organizations should have documented procedures for any lighting work, requiring management approval and ensuring all modifications adhere to electrical codes and safety standards like NFPA 70 (NEC). Regular audits and inspections help identify any unauthorized changes. Finally, using proprietary or specialized components can deter tampering. Connectors and control interfaces that are unique to a specific system make it difficult for unauthorized individuals to successfully make modifications without causing system faults. By combining physical security, technological safeguards, rigorous policies, and specialized hardware, organizations can effectively secure their lighting infrastructure against unauthorized and potentially hazardous alterations.