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Three can keep a secret, if two of them are dead.
-Benjamin Franklin
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The
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more
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people
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who
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know
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a
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secret,
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the
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more
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likely
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it
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is
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to
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leak.
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Simple
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probability
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theory
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tells
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us
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that
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even
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if
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the
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probability
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of
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any
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given
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party
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leaking
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is
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very
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low,
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the
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cumulative
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probability
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of
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a
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leak
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increases
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exponentially
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with
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the
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number
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of
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parties
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involved
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[1].
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Returning
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to
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our
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simple
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model,
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and
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the
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"Who
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needs
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to
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know
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what,
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when?"
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question,
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multiparty
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disclosure
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highlights
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the
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need
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to
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balance
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need-to-know
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with
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need-to-share.
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There
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are
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varying
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degrees
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of
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need-to-know.
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Not
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everyone
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needs
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to
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know
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the
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same
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thing
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at
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the
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same
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time.
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Patch
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originators
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are
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usually
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notified
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early
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in
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the
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process,
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since
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their
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answer
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to
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"What
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do
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I
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need
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to
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do
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in
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response
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to
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this
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knowledge?"
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(i.e.,
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create
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a
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patch)
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is
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often
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on
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the
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critical
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path
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for
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any
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downstream
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parties
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to
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be
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able
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to
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take
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action.
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Downstream
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vendors
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(patch
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consumers)
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and
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deployers
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can
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be
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notified
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later.
Coordinating Further Downstream
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