Security Requirements Analysis is a process used to identify and list all the ways a person, computer, or system needs to be protected from unauthorized access, use, or modification. It includes identifying the possible risks, threats, and vulnerabilities that could lead to harm, and developing an action plan for mitigating those risks. For example, if you have a computer system, you'll want to list things like strong passwords, firewalls, encrypted network connections, etc. that will help keep it secure.