⚠️ Retired / Legacy Exam: This exam has been retired or replaced. These practice questions are kept for reference only. Please check the official vendor website for current exam versions before studying.
A production web server is experiencing performance issues. Upon investigation, new unauthorized applications have been installed and suspicious traffic was sent through an unused port. Endpoint security is not detecting any malware or virus. Which of the following types of threats would this MOST likely be classified as?
A. Advanced persistent threat
B. Buffer overflow vulnerability
C. Zero day
D. Botnet