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Yahoo hack leaks 4.5 lakh users' passwords

Yahoo said a small fraction of the stolen passwords were valid and many technology websites said hackers belonged to an outfit called D33D Company.

About 4.5 lakh Yahoo users' email addresses and passwords have been leaked following a security breach but Yahoo said just a small fraction of the stolen passwords were valid.

Many technology websites said hackers belonged to an outfit called D33D Company.

Yahoo said that just only 5 per cent of leaked passwords associated with its account holders were valid.

The group was quoted as saying it had stolen the unencrypted passwords using an SQL injection - the name given to a commonly used attack in which hackers use rogue commands to extract data from vulnerable websites. (With AP inputs)