How the Citigroup hack happened Written by Ced Kurtz on Tuesday, 14 June 2011 2:33 pm. See this interesting NYT article on how the Citigroup hack was done. Join the conversation: Tweet Commenting policy | How to report abuse Commenting policy | How to report abuse To report inappropriate comments, abuse and/or repeat offenders, please send an email to firstname.lastname@example.org and include a link to the article and a copy of the comment. Your report will be reviewed in a timely manner. Thank you.