What type of detection system recreates events after an attack has occurred?

A Host-based Intrusion Detection System (HIDS) serves as a crucial tool for security professionals by monitoring and analyzing activities on a host or device for signs of malicious behavior or policy violations. One of its primary functions is to capture and log system events, which can be vital for post-incident analysis.

When an attack occurs, the HIDS can provide an in-depth view of the events leading up to the incident, allowing investigators to reconstruct what happened, how the attack was carried out, and what vulnerabilities were exploited. This capability is essential for understanding the attack's impact, generating reports, and improving security measures to prevent future incidents.

In contrast, the other options like Network Intrusion Detection Systems (NIDS) are more focused on traffic analysis and detecting threats in real-time rather than providing post-attack reconstruction on a host level. Firewalls are primarily used to block unauthorized access and manage traffic rules, while content filters are designed to restrict access to certain content types. None of these options are specifically designed to recreate the sequence of events following an attack as effectively as a HIDS can.