Week #2 What is application security?

Application security is the use of software, hardware, and procedural methods to protect applications from external threats. 

There are many risks associated with developing applications especially if the program will store sensitive data.  Below are common Application Security Issues which must be addressed during the development phases of an Application:

Input  Validation Tampering	A input validation is  the outer defensive perimeter for a application. This perimeter protects the  logic, processing and output generation. Examples of input validation tampering are cross-site scripting; SQL injection; canonicalization
Software Tampering	This is when someone modifies the runtime behavior to perform unauthorized actions.