Secure Development Controls in ISO 27001: A.8.25–A.8.28 Explained
If you build software, four Annex A controls — A.8.25 through A.8.28 — decide a large share of your ISO 27001 audit: secure development life cycle, application security requirements, secure architecture principles, and secure coding. This guide explains what each one actually requires, what evidence auditors accept, and how a GitHub-native startup workflow already covers most of it — once you document it.