Home Depot's stolen credit and debit card data could extend back to April 2014, if this is true the breach could be many times larger than Target's 40m stolen credit and debit cards, which were stolen in a 3 week period. The criminals behind the breach are believed to be Russian and Ukrainian hackers who are fighting against U.S. and European sanctions on Russia.
There are signs that the perpetrators of this apparent breach may be the same group of Russian and Ukrainian hackers responsible for the data breaches at Target, Sally Beauty and P.F. Chang’s, among others. The banks contacted by this reporter all purchased their customers’ cards from the same underground store – rescator[dot]cc — which on Sept. 2 moved two massive new batches of stolen cards onto the market.
http://krebsonsecurity.com/2014/09/banks-credit-card-breach-at-home-depot/