What type of data is not typically shown in the Threat Protection monitor?

The Threat Protection monitor is primarily focused on displaying information related to threats that the firewall has actively mitigated or blocked. This includes various forms of malicious activity such as viruses, spyware, and intrusion attempts.

Viruses blocked, intrusions prevented, and spyware blocked are all direct indicators of the security actions taken by the system to protect the network against malware and unauthorized access. These metrics provide essential insights into how effectively the security system is functioning and the types of threats that are being encountered.

In contrast, the applications installed on a device refer to software that may not necessarily correlate with immediate security threats. While knowing what applications are present on a network can be important for an overall security posture, it does not directly relate to the ongoing detection and blocking of threats. Thus, this type of data does not typically appear in the Threat Protection monitor, which is why it stands out as the correct answer in this context.