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LAS VEGAS -- Security researchers say a Russian crime ring has pulled off the largest known theft of confidential Internet information, including 1.2 billion username and password combinations and more than 500 million email addresses.

The cyber gang injected malicious code to steal databases from at least 420,000 websites, says Alex Holden, founder and chief information security officer for Hold Security in Milwaukee, Wisc.

FULL STORY: Time to change your password!

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