Custom web applications provide access to services and information. Validating if that access
is used as intended requires a very specific and specialized web application security
testing methodology. Because every custom application is unique, web application pen testing
is conducted to identify vulnerabilities in the underlying code. These vulnerabilities are
vulnerabilities that an attacker can leverage to gain unauthorized access. Verify that your
AppSec cycle addressed all risks. Most regulations governing organization security
obligations specifically call out web applications as requiring this form of testing, above
and beyond other internet facing assets. PCI DSS requires web application security testing
for those that have not used web app firewalls. Performing web application penetration
testing is a critical step in ensuring the code is secure, the organization is compliant,
and customers can trust their data is protected.