While I was looking after some resources for a presentation, I found this interesting lecture from ENISA.   Advancing Software Security in the EU Download PDF document, 622 KB This study discusses some key elements of software security and provides a concise overview of the most relevant existing approaches and standards while identifying shortcomings associated with the secure software development landscape, related to different inherent aspects of the process. Lastly, it provides a number of practical considerations relevant to the different aspects of software development within the newly established EU cybersecurity certification framework and the EU cybersecurity certification schemes. Fundamental security principles are often overlooked during software development. This is because Security is a non functional feature. Functional requirements are about behaviour of the system towards the outside world (e.g. a user), whereas non-functional requirements are mainly about the internal mechanisms. Many of the security requirements are non-functional; for example on how to store passwords in a database. Security requirements originate from different sources, such as – explicit functional and non-functional requests from user(s), – requirements and obligations originating from the underlying legal framework – requirements that are considered as best practices, company policies, in widely accepted guidelines, from threat…