Câu 20: 212-89: EC-Council Certified Incident Handler

A Host is infected by worms that propagates through a vulnerable service; the sign(s) of the presence of the worm include:

1. A. Decrease in network usage
2. B. Established connection attempts targeted at the vulnerable services
3. C. System becomes instable or crashes — đáp án hiện tại
4. D. All the above