(NEWSER– Photo-messaging mobile app Snapchat has had the usernames and phone numbers of 4.6 million users leaked online through a vulnerability highlighted by security researchers just a week ago. The hackers who put the user details online—with the last two digits of phone numbers censored—tell Mashable that they want to "raise the public awareness around the issue, and also put public pressure on Snapchat to get this exploit fixed," though they say full phone numbers could be revealed to interested parties, suggesting the details could be sold to spammers or phishing operations.

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