Security Engineering – The Book
cl.cam.ac.uk
cl.cam.ac.uk
wget http://www.cl.cam.ac.uk/~rja14/Papers/SEv2-{toc,pref,acks,bi...
curl -O http://www.cl.cam.ac.uk/~rja14/Papers/SEv2-c[01-27].pdf
pdftk *.pdf cat output security-book.pdf
Install pdftk with apt-get on Linux or via http://www.pdflabs.com/tools/pdftk-the-pdf-toolkit/#download
Downloading and combining all the PDFs here is left as an exercise to the reader, but please read this book. It is a very well written explanation of how to think about making things more secure.
I have to say that this is the only course book from Cambridge I've reread multiple times.
The News here (as reflected in the original title of this submission) is that the individual chapters of the SECOND edition (now four years old) are available online.
thanks again.