Complex sentence: Just like on a computer, the intrusion of a rootkit in the system is a great danger in the same way as on a computer, it is important to prevent such intrusions, and to be able to detect them as often as possible.
Split into simpler sentences: Just like on a computer, the intrusion of a rootkit in the system is a great danger in the same way as on a computer. It is important to prevent such intrusions, and to be able to detect them as often as possible.