This 6-month internship at Alcatel-Lucent involved penetration testing of connected devices and their protocols. The intern analyzed security for devices using Z-Wave, Sigfox, Lora and Bluetooth, and attacked the Z-Wave protocol. Additional tasks included scanning the network for vulnerabilities, hardening server security, and organizing a 24-hour hackathon. The intern gained valuable experience in ethical hacking, strengthened technical skills, and exceeded expectations of the internship.