A company detected an ongoing, sophisticated cyber attack targeting its infrastructure. The nature and complexity of this attack indicate it is likely a(n) ____________.

The description of an ongoing, sophisticated cyber attack targeting infrastructure aligns with an Advanced Persistent Threat (APT). APTs are characterized by their advanced tactics, prolonged duration, and often state-sponsored or highly organized origin. Recognizing the nature of the attack is crucial for appropriate response strategies and mitigation efforts in cybersecurity.__________________________________________________