IDS detection approaches

["snort user" <snort.user () gmail com>]

Greetings.

I have a general IDS related query: what are the current trends in
intrusion detection methods?

Signature based seems to be the most commonly used approach. There are
also lot of products that implement protocol decoding/analysis to
assist the signature based approach.
There are a few rate based and anomaly based products too.

What do you think is the most probable approach that will complement
the signature based approach in the recent future?

Thanks for the reply !

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