Cyber attackers executed a successful cyber-attack against Target, one of the leading retail companies in the United States in the months of November and December 2013. Using sophisticated techniques, the attackers were able to steal around 110 million records (11 GB) containing personal and financial information about Target’s customers, transferring the same to some of their servers in Russia (Eastern Europe). The data breach affected cards used in U.S. Target stores between November 27 and December 18, 2013. Thieves were able to sell information from these cards via online black market forums known as “card shops.” Those purchasing the information can then create and use counterfeit cards with the track data and PIN numbers stolen from credit and debit card magnetic stripes. On January 10, 2014, Target disclosed that non-financial personal information, including names, addresses, phone numbers, and email addresses, for up to 70 million customers was also stolen during the data breach.