# Chapter 2: The Evolution associated with Application Security Program security as we all know it today didn't always are present as an official practice. In typically the early decades regarding computing, security issues centered more on physical access in addition to mainframe timesharing settings than on signal vulnerabilities. To appreciate modern day application security, it's helpful to search for its evolution from your earliest software episodes to the advanced threats of today. This historical trip shows how every single era's challenges designed the defenses and even best practic