Anonymous: We Hacked Into NATO Claims it accessed 1 gigabyte of data By Kate Seamons, Newser Staff Posted Jul 21, 2011 11:12 AM CDT 14 comments Comments People wearing masks often used by a group that calls itself "Anonymous" take part in a rally in Madrid. (AP Photo/Arturo Rodriguez) (Newser) – Anonymous would like us to know that it is taking the responsible route. Sort of. The group of computer hackers today announced that it was able to breach NATO security and access 1 gigabyte of restricted material, but it posted just one PDF file on its Twitter page showing what appeared to be a document headed "NATO Restricted" and dated Aug. 27, 2007. It tweeted that it won't publish most of the data it "is sitting on ... as it would be irresponsible." But the AP notes that Anonymous hinted more was to come. It teased, "Hi NATO. Yes we haz more of your delicious data. You wonder where from? No hints, your turn. You call it war; we laugh at your battleships." Says a NATO official, "NATO security experts are investigating these claims. We strongly condemn any leak of classified documents, which can potentially endanger the security of NATO allies, armed forces, and citizens."