There are many good books on security architecture. The technical details change every week, but the fundamental approach does not change. "Security Engineerin

There are many good books on security architecture. The technical details change every week, but the fundamental approach does not change. "Security Engineering" by Ross Anderson is a must-read: https://www.cl.cam.ac.uk/~rja14/book.html https://www.cl.cam.ac.uk/~rja14/book.html (it's freely available, too)