Regarding intrusion prevention, which of the following option descriptions is wrong

Intrusion prevention is a new security defense technology that can detect and prevent intrusions.

Intrusion prevention is a security mechanism that detects intrusions (including buffer overflow attacks, Trojan horses, worms, etc.) by analyzing network traffic

Intrusion prevention can block attacks in real time.

Intrusion prevention technology, after discovering an intrusion, the firewall must be linked to prevent the intrusion