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Subject: Re: [cti-stix] Things that are difficult in STIX

I would further add that timestamps are treated differently in various parts of the document as far as their structure is concerned.  



Bret Jordan CISSP
Director of Security Architecture and Standards | Office of the CTO
Blue Coat Systems
PGP Fingerprint: 63B4 FC53 680A 6B7D 1447  F2C0 74F8 ACAE 7415 0050
"Without cryptography vihv vivc ce xhrnrw, however, the only thing that can not be unscrambled is an egg." 

On Nov 18, 2015, at 10:36, Jason Keirstead <Jason.Keirstead@ca.ibm.com> wrote:

I think this document is excellent!

One I would like to add that I don't see present - timestamps. The fact that timestamps are (a) optional, and (b) have an undefined format (no required ISO format string), makes STIX very painful to work with as a consumer. All we have are best practices, which are not always adhered to, and even the best practice is inconsistent with respect to things like how to treat time zones.

Jason Keirstead
Product Architect, Security Intelligence, IBM Security Systems
www.ibm.com/security | www.securityintelligence.com

Without data, all you are is just another person with an opinion - Unknown

<graycol.gif>John Anderson ---11/18/2015 10:55:13 AM---Terry, Thank you. This document explicitly points out many of the "pain points" I (as a recent induc

From: John Anderson <janderson@soltra.com>
To: Terry MacDonald <terry@soltra.com>, "cti-stix@lists.oasis-open.org" <cti-stix@lists.oasis-open.org>
Date: 11/18/2015 10:55 AM
Subject: [cti-stix] Re: Things that are difficult in STIX
Sent by: <cti-stix@lists.oasis-open.org>

Thank you. This document explicitly points out many of the "pain points" I (as a recent inductee to the STIX/CybOX implementor's club) have felt. I am very encouraged by your vision of the future.

My two favorites are:
    • ​top-level Relationship object -> This foundational shift will greatly KISS the data model. Bring it on!
    • top-level Opinion object -> Can I "+1" this idea? <0B326625.gif>
The rest is good, too, and I look forward to a greatly-improved STIX 1.2 that's very close to your proposal.

From: cti-stix@lists.oasis-open.org <cti-stix@lists.oasis-open.org> on behalf of Terry MacDonald <terry@soltra.com>
Tuesday, November 17, 2015 8:47 PM
[cti-stix] Things that are difficult in STIX

Hi All,

We’ve spent a bit of time over the last 2 weeks thinking about where STIX could be improved. We’ve gone through the various discussion points that people have raised on and off list, and through the various experiences that we’ve had ourselves in using STIX. The attached document is the result of that work. In it we list 25 topics that we believe could be improved in some way (or at least should be discussed).

Our hope is that the document will help prompt discourse, and move us towards consensus so that we can agree some of the cross-cutting major issues that Sean mentioned in his STIX v2.0 Roadmap wiki page. We plan to add these items to the STIX issue tracker, and to the STIX v2.0 Roadmap wiki page, so that they are accurately tracked and followed.

Please feel free to provide feedback on this document – positive or not – as the end goal is making something that was better than before. We have thick skins J.

Also - thank you to all who provided items for inclusion in the list. I haven’t named people as I wasn’t sure if they wanted their names public. But please accept my thanks for your input.


Terry MacDonald
Senior STIX Subject Matter Expert
SOLTRA | An FS-ISAC and DTCC Company
+61 (407) 203 206 | terry@soltra.com

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