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Technology correspondent Peter Griffin joins Kathryn to talk about the NZX outage which appears to have been a denial of service attack.
Does the NZX have the means to protect itself in the face of a determined attack? Sharesies now has 200,000 users - what's behind its popularity?
Peter will look at Robin Hood, a free share trading platform in the US, which has been criticised for its "gamification".
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