Answer - D - When a program running on a server bypasses authorization, it a strong possibility that a back door attack is in progress.
Key Takeaway: In a back door attack, a program or service is placed on a server to bypass normal security procedures. A back door is a program that is designed to hide inside a target host. It allows the installing user access to the system at a later time without using standard authorization or vulnerability exploitation.
These types of attacks can lead to significant data breaches or other poor cybersecurity outcomes.