▁ ▁Ark ano i D ▁emphas ized ▁all ▁the ▁communic ations ▁were ▁carried ▁over ▁X . 2 5 ▁network ▁and ▁the ▁Internet ▁was ▁not ▁involved . ▁Ark ano i D ' s ▁group ▁in ▁ 1 9 9 4 ▁found ▁out ▁Cit ib ank ▁systems ▁were ▁un protected ▁and ▁it ▁spent ▁several ▁weeks ▁exam ining ▁the ▁structure ▁of ▁the ▁bank ' s ▁USA - based ▁networks ▁rem ot ely . ▁M embers ▁of ▁the ▁group ▁played ▁around ▁with ▁systems ' ▁tools ▁( e . g . ▁were ▁installing ▁and ▁running ▁games ) ▁and ▁were ▁un not iced ▁by ▁the ▁bank ' s ▁staff . ▁Pen et rat ors ▁did ▁not ▁plan ▁to ▁conduct ▁a ▁rob ber y ▁for ▁their ▁personal ▁safety ▁and ▁stopped ▁their ▁activities ▁at ▁some ▁time . ▁One ▁of ▁them ▁later ▁handed ▁over ▁the ▁cru cial ▁access ▁data ▁to ▁Le vin ▁( report edly ▁for ▁the ▁stated ▁$ 1 0 0 ). ▁ ▁References ▁Notes ▁ ▁Bibli ography ▁▁ 1 9 9 7 ▁Ext rad ition ▁judgment ▁ ▁Net ▁Cra ck ers ▁and ▁the ▁Tr uth ▁about ▁Le vin ' s ▁Case ▁— ▁the ▁book ▁Att ack ▁from ▁Internet , ▁ 2 0 0 2 , ▁I . ▁Med ved kov sky , ▁P . ▁S emy an ov , ▁D . ▁Leon ov , ▁A . ▁L uk at sky ▁() ▁ ▁External ▁links ▁ ▁" A ▁Byte ▁Out ▁of ▁History ▁- ▁$ 1 0 ▁Mill ion ▁H ack , ▁ 1 9 9 4 - Style " ▁- ▁F