Câu 271: SY0-401: CompTIA Security+

A trojan was recently discovered on a server. There are now concerns that there has been a security breach that allows unauthorized people to access data. The administrator should be looking for the presence of a/an:

1. A. Logic bomb.
2. B. Backdoor. — đáp án hiện tại
3. C. Adware application.
4. D. Rootkit.