"Compare a ÒbaseÓ
system against a system protected with retrofits
ÐE.g.
Red Hat enhanced with Immunix, SELinux, etc.
ÐWindows
enhanced with Entercept, Okena, etc.
"Count the number
of known vulnerabilities stopped by the technology
"ÒRelative
InvulnerabilityÓ: % of vulnerabilities stopped