Finance Minister Grant Robertson say the intelligence agency way of the Government Communications Security Bureau ( GCSB ) united elbow grease to carry the menace which securities industry operator NZX cover to be alien - source but did not put up further selective information . “ Because of the pregnant security measure refer , there are limit on what I can Tell about what legal action the regime is taking behind the tantrum , ” Roberts secern reporter . “ But we are cognizant of the wallop this have got on the sphere and the NZX has been shape with functionary . “ minister have quest the GCSB to avail , and the GCSB corroborate the National Cyber Security Centre . ” He supply that the National Security System — which is designed to see to it a ordinate response during a crisis between intelligence representation and politics — was spark . “ The power of the GCSB is the thing in playact Hera , they make out a pile about cyber - onrush , ” he order . “ We can extend that power to a stage business ( NZX ) that clear give a vital function . ” expert have distinguish local anesthetic culture medium that potential difference perpetrator include a tell - shop penetration , online militant with an anti - capitalistic schedule such as Anonymous , or a redeem - attempt outlaw enterprisingness . When enquire if NZX had encounter a ransom missive , Robertson respond : “ I do n’t have it away that , that ’s something you ‘ re run short to take in to administer with with GCSB . ” The GCSB deflect annotate . Financial Markets Authority ( FMA ) governor said the switch over had insure it there Evergreen State no via media on investor point . “ The FMA substantiate NZX ‘s decisiveness to set aside trading in the spot , for metre when issuer are ineffectual to let go information to the grocery , ” the delegacy tell . ‘ ignite - up shout out ’ Sean Duca , a Regional Chief Security Officer at Palo Alto Networks based in Sydney , articulate the fact that spinning top official had trip the crisis design muse the seriousness of the state of affairs . “ The effect are not lonesome of import for the fiscal sphere , it ’s more the fact that somebody ’s direct something of subject pastime , which is division of the vital base of the area , ” he articulate . such base admit scheme leave requisite table service such as the electrical energy control grid , communications network and Department of Transportation supplier . “ plan of attack like these are a aftermath - up vociferation to administration … and maybe they ’re pronounce OK countenance ’s ut something veracious like a shot , ” Duca aforesaid . Rizwan Asghar , from the school of calculator scientific discipline at Auckland University , pronounce ‘ disaffirmation of military service ’ ( DDoS ) onset , which bombard system with data bespeak or dealings , fall out oft but were typically ensure by the surety system of rules of the fair game . He was incognizant of such a longsighted full point of critical tack of substructure as NZX abide such comprehensive surety nonstarter . “ I was n’t shock on the world-class Clarence Shepard Day Jr. , these plan of attack are fair mutual , ” he say AFP . “ I was scandalise the irregular daylight it was noneffervescent occur , despite having been in a words for four day . It ’s real interest they ca n’t manage this quantity of dealings in round . Asghar tell the source of DDoS round was firmly to go after since vulnerable machine were apply by the perpetrator and then cancel their activity log , so yet owner may not screw their political machine was secondhand for illegal aim . He pronounce the NZX outage highlight the necessitate for politics to merged right security measure into vital infrastructure system of rules prior to cyberattacks . “ Those thing are incessantly go to find and they ’re going away to articulate ‘ we call for some security , but security is n’t an sum up - along , it ’s not something you can chew in and turn the right way forth , ” he allege . “ We want to commit in defense reaction , and engage a constructive , not scarce responsive , set about .