How can I secure confidential data within LabVIEW?

I am writing a VI hierarchy that handles confidential data received across a network and sends it out over another communications link.
If I password-protect all the VIs that handle the confidential data, will this render it as secure as it can be within the LabVIEW domain?
Or is there still a way of intercepting the data as it is passed between VIs in the call hierarchy?
Is it possible to hook into low level TCP components that don't show up in the call hierarchy?
I'm anxious to do the best I can without going completely OTT. Please can someone advise?
Many thanks
Nick

Nick;
A trick I do is to use a state diagram and a local variable. With the
state diagram I force LabVIEW to keep the data in memory and then
outside I rewrite the control with an empty value. That way the data
will not stay in the control so somebody can read it and will go away
as soon as the VI finishes. This is to get the data into the sub VI.
See the attached picture.
Encrypt data and keep it encrypted until need to be processed. Check my library Crypto-G at:  www.visecurity.com
Regards;
Enrique
Message Edited by Enrique on 07-05-2005 04:23 PM
www.vartortech.com
Attachments:
sample.gif ‏2 KB

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