The lengthy speakers list includes John Draper aka "Captain Crunch," who famously used a whistle from a cereal box to access long-distance switching networks in the early 1970s, as well as Peter Sunde and Fredrik Neij, two founders of the torrent search engine The Pirate Bay.

Google will reprise its "Pwnium" competition, which it debuted at the CanSecWest security conference in March in Vancouver, British Columbia.

The company, which holds the competition to allow researchers to compete for prize money to find security problems within its Chromium browser, will give away up to $2 million in rewards. It has allocated a $60,000 reward for a full Chrome exploit, $50,000 for a partial Chrome exploit and $40,000 for other non-Chrome exploits, which it has

One of the major events will be a 32-hour "Capture the Flag" hacking competition. This year, teams of three people each will compete in a scenario that is centered around the defense of SCADA (Supervisory Control and Data Acquisition) systems.

Teams this year will "manage" their own nuclear power plants, with services and daemons -- which represent seven reactor cores -- running on their machines. Opposing teams try to penetrate their computers, with poor defense penalized by a loss of fake money.