tampered
v. B2 Upper Intermediate US //ˈtæmpɝd// UK //tˈæmpəd// tam·pered
v. to touch or change something in a way that is not allowed or is not helpful. You use this when someone tries to break into a lock or change a machine to make it work differently.
v. to interfere with something in a way that is illegal, harmful, or unauthorized. Often implies a deliberate attempt to alter the original state or function of an object.
The police found that someone had tampered with the lock.
Security cameras showed that an employee had tampered with the system to hide the missing inventory.
The forensic team concluded that the evidence had been tampered with before the official investigation began, leading to the dismissal of the initial suspect.