# Chapter 2: The Evolution regarding Application Security Program security as we know it nowadays didn't always exist as a conventional practice. In the early decades associated with computing, security problems centered more upon physical access in addition to mainframe timesharing adjustments than on signal vulnerabilities. To understand modern application security, it's helpful to track its evolution in the earliest software attacks to the superior threats of nowadays. This historical trip shows how each era's challenges molded the defenses in addition to best practices we now consider st