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Hacking VoIP by Himanshu Dwivedi

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Spam Over Internet Telephony

Remember the old days when you could just select and delete all the spam messages in your inbox? How about when you could just go to your Junk email folder and simply delete its contents with just one click? Now think of having more than a hundred voicemail messages (or the maximum capacity of your voicemail box) on your mobile phone. Could you delete all of them with just a few clicks on your phone? Furthermore, what would you do when legitimate users who are trying to leave you a message are not able to leave you one, such as "My flight from O'Hare got canceled because someone saw a cloud 400 miles away from the airport, so pick me up from SJC at 9 PM instead of SFO at 5 PM"? How disruptive would these issues be ...

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