If you believe the Sanders camp, this sounds a lot like the Instagram bug bounty issue [1] that appeared on HN recently.  Someone from the Sanders campaign identified a bug and to prove their was an issue grabbed private data that they should have never had the ability to access.  That is questionable ethically whether they looked at the data or not.  The DNC also can&#x27;t immediately tell if it is the truth or if the data was taken maliciously.  Given that, I don&#x27;t think it is unreasonable to temporarily shut out the Sander campaign until it was fixed.  <i>Although if I was in charge, I would shut out all campaigns until the matter is fully investigated.  It isn&#x27;t fair to disable one campaign if there was nothing malicious happening. (Never mind, see edit)</i><p>EDIT: Actually on seconding reading the Sander&#x27;s lockout was not for security reasons and was only done by the DNC in awaiting full details from the campaign.  In that instance it wouldn&#x27;t make sense to suspend any other campaign&#x27;s access.  They are punishing the Sanders campaign in hopes that it causes a quick confession of the exact details of what data the campaign accessed and retained.  I still don&#x27;t think that response is as unreasonable as some Sander supporters are alleging.<p>[1] - <a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=10754194" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=10754194</a>