What does it mean to build secure Linux?

TCSのサイトからGCN as seen in Government Computer Newsを見つける
What does it mean to build secure Linux?
http://www.trustedcs.com/images/GCNApril0306.pdf

SELinux、TrustedLinux、SecureLinux、CCネタ
寝ちゃうので後ほど

これははじめて知った↓
Trustix Secure Linux
http://www.trustix.org/

DIAのこれもおもしろそう
TCS SPECIAL REPORT
Reshaping Infrastructure for Today’s Intelligence Challenges
http://www.trustedcs.com/images/TCSSR_0606.pdf
MLSの話があるような