▁ ▁Iran ▁ ▁In ▁June ▁ 2 0 1 0 , ▁Iran ▁was ▁the ▁victim ▁of ▁a ▁cy ber ▁attack ▁when ▁its ▁nuclear ▁facility ▁in ▁Nat anz ▁was ▁in fil tr ated ▁by ▁the ▁cy ber - w orm ▁' St ux net ', ▁said ▁to ▁be ▁the ▁most ▁advanced ▁piece ▁of ▁mal ware ▁ever ▁discovered ▁and ▁significantly ▁increases ▁the ▁profile ▁of ▁cy ber war fare . ▁It ▁destroyed ▁perhaps ▁over ▁ 1 , 0 0 0 ▁nuclear ▁cent rif ug es ▁and , ▁according ▁to ▁a ▁Business ▁Ins ider ▁article , ▁"[ set ] ▁Te h ran ' s ▁atomic ▁program ▁back ▁by ▁at ▁least ▁two ▁years ." ▁ ▁Despite ▁a ▁lack ▁of ▁official ▁confirm ation , ▁Gary ▁Sam ore , ▁White ▁House ▁Co ordin ator ▁for ▁Ar ms ▁Control ▁and ▁We ap ons ▁of ▁Mass ▁Dest ruction , ▁made ▁a ▁public ▁statement , ▁in ▁which ▁he ▁said , ▁" we ' re ▁glad ▁they ▁[ the ▁Iran ians ] ▁are ▁having ▁trouble ▁with ▁their ▁cent rif uge ▁machine ▁and ▁that ▁we — the ▁US ▁and ▁its ▁al lies — are ▁doing ▁everything ▁we ▁can ▁to ▁make ▁sure ▁that ▁we ▁comp licate ▁matters ▁for ▁them ", ▁offering ▁" w inking ▁acknowled g ement " ▁of ▁US ▁invol vement ▁in ▁St ux net . ▁ ▁China ▁ ▁In ▁ 2 0 1 3 , ▁Edward ▁Snow den , ▁a ▁former ▁systems ▁administrator ▁for ▁the ▁Central ▁Int elligence ▁Agency ▁( CI A ) ▁and ▁a ▁counter int elligence ▁tra iner ▁at ▁the ▁Def ense