A 3D printer is a device that creates physical, three-dimensional objects from digital models, typically by depositing material layer by layer. In cybersecurity, 3D printers can introduce unique risks, such as vulnerabilities in their software or network connectivity, which could be exploited to steal intellectual property, sabotage printed objects, or gain unauthorized access to connected systems. Protecting 3D printers involves securing their firmware, monitoring network activity, and managing access controls to prevent data breaches or tampering with the manufacturing process.