A company’s gate access logs show multiple entries from an employee’s ID badge within a two-minute period. Which of the following is this an example of?

RFID cloning is the correct answer because it involves duplicating an RFID tag's data onto another tag. If an employee's legitimate badge is cloned, both the original and cloned badges could be used to gain entry, potentially within a short timeframe, appearing as multiple entries from the same ID. A side-channel attack exploits information gained from the implementation of a computer system, rather than weaknesses in the implemented algorithm itself (e.g., power consumption analysis), which is not applicable here. Shoulder surfing is observing someone's credentials or sensitive information over their shoulder. Tailgating is following an authorized person through an access point without using one's own credentials. While tailgating could involve multiple entries, the logs would show one authorized entry followed by an unauthorized one, not multiple entries from the same ID badge.