Agile development is focused on getting functional software to users more quickly. DevOps and containers are being adopted as a way to deploy applications more quickly, and simplify the management of production software. The biggest change, however, is the adoption of open source. Traditional security testing tools like static and dynamic analysis have proved to be ineffective in identifying security issues in open source “in the wild” In-house applications that are comprised of 75% or more open source are increasingly based on open source.”]
Source: https://www.darkreading.com/application-security/security-in-the-age-of-open-source