Agile software development is a conceptual framework for undertaking software engineering projects that embraces and promotes evolutionary change throughout the entire life-cycle of the project. What it does not do is incorporate information security risk into the process. It is another way to keep costs down in the development process but created by those without any inkling of what it means to include security in any process whether iterative or waterfall-like. Most agile teams are located in a bullpen and include all the people necessary to finish software but not to write proper software free of vulnerabilities.”]
Source: https://www.csoonline.com/article/2136288/agile-software-development.html