# Chapter a couple of: The Evolution of Application Security Application security as we all know it today didn't always can be found as a formal practice. In typically the early decades of computing, security problems centered more about physical access and mainframe timesharing adjustments than on signal vulnerabilities. To understand modern day application security, it's helpful to track its evolution from the earliest software attacks to the advanced threats of today. This historical journey shows how every era's challenges molded the defenses plus best practices we have now consider stan