Corporations and other large organizations are finding themselves increasingly vulnerable to malicious hacks from pranksters or serious criminals. Defense contractor recently revealed it was the target of a cyberattack, but claimed it had repelled the intruders and protected its data.

The Lockheed Martin attack was the result of a previous intrusion against that compromised the company's SecurID two-factor authentication product.

A March break-in against , the world's biggest email marketing firm, exposed the customer names and email addresses for dozens of high profile companies such as JPMorgan Chase, Capital One, US Bank, Citigroup, and Walgreens.

In late April, malicious hackers stole a few megabytes of data from the Oakridge National Laboratory, funded by the U.S. Department of Energy. Finally, the now infamous Sony , which shut down the online gaming network for nearly four weeks, still has the company reeling from a lot of bad press and disgruntled users.

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