Security Advice By Roger G. Johnston, Ph.D. At LANL

security advice (2012)

In contemplating the use of any new security measure, strategy, or product, you need to determine the correct answers to 3 questions:

(1) To what extend does this really improve security?

(2) What are all the costs, trade offs, and side effects (because there always  some)?

(3) Is 1 commensurate with 2?