[Dshield] Have spammers managed to forge the first received lines?

JD lists at webcrunchers.com
Sun Feb 1 21:51:16 GMT 2004


On Feb 1, 2004, at 7:19 AM, Johannes B. Ullrich wrote:

> Spammers are hijacking IP space for a quite a while now. Usually they
> try to figure out assigned but unused IP space which they will then
> temporarily announce from other networks. Services like Renesys's
> 'GRADUS' service can be used to watch for announcement of one's IP 
> space
> from unauthorized sources.

Ok,  that's what I suspected.

john




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