[Asterisk-Users] Re: VoIP SPAM, what's next ?

Loek Gijben Loek at Gijben.nl
Tue Aug 10 13:14:11 MST 2004


"hank" <hank at hanksmith.net> wrote:
> voip spam?
> I have never gotten any yet.

It's is just waiting for the first one to arrive..
The mechanics are just too appealing for spam-like businesses.

Imagine a telemarketeer script that dials lists of VoIP addresses. Instead of having 
to pay for each call they use cheap Internet bandwioth. The same cost savings we  
use * for applies to the telemarketeers also. 

> ----- Original Message ----- 
> From: "John Todd" <jtodd at loligo.com>
> > At 7:14 PM +0200 on 8/10/04, Soren Rathje wrote:
> >>Gang,
> >>Do anyone have a clue on how they do this ??
They  state that they can discriminate between a automated call and a human 
caller. I'm very sceptic about that: if I record a salespitch and later fan it out to a list 
of known ENUM hosts, then it would be indisciminable from an actual phonecall...
... at least for the start of the salespitch, and that's bad because then you've already 
crawled to your phone and  picked up the handset.

Blacklisting spammers is harder too, compared to SMTP spam.

> > VOIP Spam is actually pretty trivial to take care of, if only the 
> > manufacturers would wise up.

That's oversimplified. You wan't people that you don't know yet to be able to contact 
you. (I want potential customers to call my business number).
All kind of SMTP scanning and filtering techniques won't do good in the VoIP world 
as you cannot examine the whole message. It's realtime..

My 2 eurocents,
loek gijben



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