- Users of Yahoo's paid services were targeted by scam artists trying to gain access to their personal information, including credit card numbers.
In a statement emailed to Computerworld US, a spokeswoman for the Sunnyvale, California-based internet portal said that an individual or individuals posing as part of Yahoo had sent emails to users in an effort to trick them into disclosing their online account information.
The spokeswoman said Yahoo "takes all reports of fraud by third parties very seriously" and has alerted its users to the scam.
Although the spokeswoman couldn't provide further details, according to published reports, less than 24 hours elapsed between the time the bogus email was sent and the time Yahoo sent out its own mass email to its users yesterday morning advising them not to respond to the phony request.
It wasn't immediately clear what the fraudulent email to customers said.
A Yahoo spokeswoman said that some users fell for the request and divulged their credit card numbers, although most did not.
Yahoo also said it didn't know the origin of the fraudulent email.
Last month, online payment service PayPal was also targeted by scam artists trying to get the personal information of its users. However, unlike Yahoo, PayPal didn't notify its customers of the scam.