INTRODUCTION   The  protec3on  of  cri3cal  infrastructure  has  been  linked  to  cyber  security  for  the  past   25  years,  during  which  3me  many  advanced  industrialised  states  have  priva3sed   cri3cal  infrastructure  systems  such  as  water  and  sewerage,  electricity,  finance,   communica3ons  and  transport.       Where  cri3cal  infrastructural  has  been  largely  priva3sed,  policies  invariably  rely  on   PPPs  as  the  frontline  through  which  to  mi3gate  the  threat.     Ø In  the  US  and  UK,  PPPs  are  referred  to  as  the  “cornerstone”  of  na3onal  cyber-­‐ security  strategies.   Ø Currently  about  85  per  cent  of  US  cri3cal  infrastructure  is  in  private  hands.       Page  §  8  

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