Trailrunner7 writes “A security researcher discovered a simple vulnerability in Verizon Wireless’s Web-based customer portal that enabled anyone who knows a subscriber’s phone number to download that user’s SMS message history, including the numbers of the people he communicated with. The vulnerability, which has been resolved now, resulted from a failure of the Verizon Web app to check that a number entered into the app actually belonged to the user who was entering it. After entering the number, a user could then download a spreadsheet file of the SMS activity on a target account. Cody Collier, the researcher who discovered the vulnerability, said he decided right away to report it to Verizon because he is a Verizon customer and didn’t want others to have access to his account information. ‘I am a Verizon Wireless customer myself, so upon finding this, I immediately looked for a way to contact Verizon. I wouldn’t want my account information to exposed in such way, ‘ Collier said via email.” Read more of this story at Slashdot.