2011 in Review: Top Computer Hacks That Shook the World

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  • Sony's PlayStation Network
    Sony's PlayStation Network
  • Citigroup Credit Cards
    The Securities and Exchange Commission's enforcement officials are reportedly going to recommend that the agency appeal a scathing opinion from a federal judge in Manhattan rejecting a $285 million settlement with Citigroup.
  • The FBI and the CIA
    The FBI and the CIA
  • The U.S. Senate
    The U.S. Senate
  • Lockheed Martin
    Lockheed Martin
  • International Monetary Fund
    International Monetary Fund
  • Sega Corp
    Sega Corp
  • Gmail Accounts
    Gmail Accounts
  • The Pentagon
    Sequester cuts will force the Pentagon to reduce defense spending by about $45 billion and furlough hundreds of thousands of employees.
  • NASA, Booz Allen Hamilton, Arizona Police and Others
    NASA, Booz Allen Hamilton, Arizona Police and Others
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This year saw a number of sensational instances when the Web sites of various government agencies and corporations were hacked, in what appeared to a series of cyber-wars, initiated by a group of hackers.

This may sound grim but 2011 was, in several ways, the Year of the Hackers, with damages rumored to be running to millions of dollars.

Hacker group Lulz Security (LulzSec) claimed responsibility for a number of large-scale data breaches and, working closely with another hacker collective called Anonymous, LulzSec encouraged other groups and individuals to open fire on any government or agency that crosses their path. They named the undertaking as Operation Anti-Security.

Check out the slideshow for more details on the most sensational hacks of 2011.

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