Security Assessment Methodology

[Robert McMahon <rmcmahon () mgfairfax rr com>]

I am researching best practices in security assessment methodologies.  I
have used the System Security Engineering Capability Maturity Model
(SSE-CMM) as a basis for performing security assessments in my past (see
http://www.sse-cmm.org for more detail).  However,  in keeping up to
date, I would appreciate any advise on other security assessment
methodologies that are also highly regarded in industry.

Thank you,

Bob McMahon, CISSP