If you can prove legal ownership of the PLC and the software, you may contact Siemens Industry Online Support
As with any industrial control system, security is a top priority for Siemens S7 PLCs. Default passwords and unauthorized access can pose significant risks to the reliability and safety of the system. Siemens provides guidelines and recommendations for secure password management and recovery. passwordfindplc siemens s7keys7v314
Only if the program is no longer needed or if you have a backup Do you have the STEP 7 project files If you can prove legal ownership of the