What are the typical steps involved in the post$-$mortem investigation of a compromised system?

Retrieval of data from backups, analysis of network traffic, and implementation of firewall rules.

Identification of the intrusion point, examination of system logs$,$ and creation of a timeline of events.

Installation of antivirus software, scanning for malware signatures, and updating system patches.

Review of user permissions, modification of access controls, and resetting of user passwords.