abstract:Stakkato is the alias of the perpetrator or perpetrators of a worldwide cyber attack known to have occurred from at least December 2003 until May 2005, targeting a large number of sites on the Internet including the US Military, White Sands Missile Range, NASA, a number of US academic institutions (known to include Caltech, Stanford University, San Diego Supercomputer Center, and UIUC), and a number of non-US academic institutions (known to include Uppsala University in Sweden and University College Cork in Ireland) and several other Internet locations.