Evasion Techniques still in use?

Hi there,

After a long searching thru the web I couldn't find news about evasion thecniques to pass thru IDS/IPS systems. What lasts was Dan Kaminsky presentation at BlackHat 2005, where he presents some temporal IP attacks.

The paper from Ptacek and Newsham (Insertion, Evasion, and Denial of Service: Eluding Network Intrusion Detection) shown many techniques that was widely used for many.
But, for now? Are those techniques still in use?
Does anyone has some paper about it?

Tks!

Leonardo Cavallari

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