IPS Severity Levels | Trend Micro Service Central

Severity	Description
1—Information	Port-based traffic (examples: HTTP, SMTP).
2—Low	Policy-related signatures (examples: IM, P2P, Games)
3—Medium	Tunneling and scanning activity.
4—High	Most intrusion-related signatures.
5—Critical	Same as high severity plus very high impact to servers and end users (examples: CVE-2008-4250, Conficker).

Severity

Description

1—Information

Port-based traffic (examples: HTTP, SMTP).

2—Low

Policy-related signatures (examples: IM, P2P, Games)

3—Medium

Tunneling and scanning activity.

4—High

Most intrusion-related signatures.

5—Critical

Same as high severity plus very high impact to servers and end users (examples: CVE-2008-4250, Conficker).