I often read thing and speak about things related to security of 802.11b and g networks. Lots of tools exist to audit security such as kismet, aircrack, void11, and so on.
But what about 802.11a networks? Does exist tools like those i described before for 802.11a networks (except netstumbler).
If there's nothing for 'a' network, it can be considerated that it's a secure 'network' and should be used instead of well known b and g (with a little bit encryption of course).

a is simply outdated and less sparsely used. Some of the tools you mentioned support a adapters. Just look

Its that kind of statement that suggest 'security by obscurity' .... Which nowadays has been proven wrong ten fold... Dont consider this secure, please dont, its a really idiotic statement/assumption to make....

Assumption is the mother of all f**k ups

802.11b/g are developed to enhance security and other features of 802.11a. the lack of security in the 802.11a is the main reason why most company are hesitant to implement it.

-tikz

I mean a 802.11a with equal security as a 802.11b network, you have less risk to be hacked
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tikbalang, do you have some paper explaining what you said, i'm interested.

Mr_X... you might want to read some information here.