▁security ▁policy ▁for ▁example , ▁if ▁a ▁ro gue ▁administrator ▁gr ants ▁himself ▁or ▁herself ▁too ▁much ▁access ▁to ▁a ▁system . ▁In ▁short , ▁it ▁measures ▁comp liance ▁to ▁a ▁technical ▁risk ▁model . ▁ ▁Eng aging ▁an ▁M SS P ▁The ▁decision ▁criteria ▁for ▁eng aging ▁the ▁services ▁of ▁a ▁M SS P ▁are ▁much ▁the ▁same ▁as ▁those ▁for ▁any ▁other ▁form ▁of ▁out s our cing : ▁cost - effect iveness ▁compared ▁to ▁in - house ▁solutions , ▁focus ▁upon ▁core ▁compet encies , ▁need ▁for ▁round - the - clock ▁service , ▁and ▁ease ▁of ▁remaining ▁up - to - date . ▁ ▁An ▁important ▁factor , ▁specific ▁to ▁M SS , ▁is ▁that ▁out s our cing ▁network ▁security ▁hands ▁over ▁critical ▁control ▁of ▁the ▁company ' s ▁infrastr ucture ▁to ▁an ▁outside ▁party , ▁the ▁M SS P , ▁whilst ▁not ▁rel ieving ▁the ▁ult imate ▁responsibility ▁for ▁errors . ▁The ▁client ▁of ▁an ▁M SS P ▁still ▁has ▁the ▁ult imate ▁responsibility ▁for ▁its ▁own ▁security , ▁and ▁as ▁such ▁must ▁be ▁prepared ▁to ▁manage ▁and ▁monitor ▁the ▁M SS P , ▁and ▁hold ▁it ▁account able ▁for ▁the ▁services ▁for ▁which ▁it ▁is ▁contract ed . ▁The ▁relationship ▁between ▁M SS P ▁and ▁client ▁is ▁not ▁a ▁turn key ▁one . ▁ ▁Although ▁the ▁organization ▁remains ▁responsible ▁for ▁def ending ▁its ▁network ▁against ▁information ▁security ▁and ▁related ▁business ▁ris ks , ▁working ▁with ▁a ▁M SS P ▁allows ▁the ▁organization ▁to ▁focus ▁on ▁its