Application hardening protects both the app itself and the data it uses, and is a required application security method under various regulations and standards. There are multiple application hardening techniques; companies may choose to employ all of them or a subset depending on their exposure, risk tolerance, and performance requirements.
As long as there are applications, there will be application vulnerabilities that can be exploited by attackers. Application hardening shields these vulnerabilities from attack. Depending on the degree of hardening employed, it can protect partially or fully against static analysis of your source code, dynamic analysis of your application at run time, attacks that attempt to bypass application or system controls, and even code tampering.
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