This is the same as if the URL was the following and all you had to do was change the phone number and you would get an email address. http://att.com/email

This is the same as if the URL was the following and all you had to do was change the phone number and you would get an email address. http://att.com/email?phone=555-1212 And Weev noticed this and wrote a for loop to try all phone numbers.