March 2019 AST Magazine March 2019 AST Magazine | Page 14

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Measurement
ABRA is a quantitative assessment using
mathematical equations to calculate and
measure asset value, threat likelihood,
vulnerability and risk versus the standard
vulnerability assessment process, which
is a qualitative or subjective assessment
which normally focuses on compliance to
regulatory requirements.
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ABRA if they were to be implemented.
Knowing the BVR and comparing it to the
OVR and then calculating the cost to reach
the OVR, the ABRA methodology produc-
es a cost–benefit analysis that can be used
to prioritize countermeasures or compare
one facility to another.
To summarize, ABRA quantifiably mea-
sures vulnerability and risk, prioritizes
Both methodologies identify vulnerabil- recommended countermeasures, prior-
ities and recommend countermeasures itizes facilities, and compares cost and
to mitigate those vulnerabilities; howev- countermeasure effectiveness.
er, ABRA goes further
because it identifies
current values of vul-
nerability and then re-
assesses those values
of vulnerability based
on implementation of
recommended counter-
measures.
Not only does ABRA pro-
vide quantitative mea-
surements of vulnera-
bility and risk, it also
provides cost estimates
for the recommended
countermeasures de-
veloped as part of the
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