A security researcher has uncovered a flaw in Windows Phone 7.5 that allows a mobile device's messaging services to be disabled by a malicious SMS message.

"Upon receiving an infected message, the phone will shut itself down," writes InformationWeek's Paul McDougall. "When the user reboots, Windows Phone's Messaging Hub will not open, according to Kahled Salameh, who reported his findings to the blog WinRumors."

"Staffers at the blog said they tested and confirmed the attack's effectiveness on several Windows Phone devices, including the HTC Titan and the Samsung Focus," McDougall writes.

Go to "Windows Phone 7.5 Vulnerable To SMS Hack?" to read the details.

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