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Subject: Re: [cti] Update from STIX Package renaming Mini-Group


Jason Keirstead wrote this message on Tue, May 03, 2016 at 14:07 -0300:
> That seems like a TAXII level problem, if anything.
> 
> I don't see how having IDs would even solve that problem, without changes
> to TAXII to allow someone to say something like "bundle recieved"

I agree...  I don't think Bundles should have IDs.

We decided that STIX was going to be a transport mechanism, not a
document format.  If you don't have the TLO's you need, then you need
to request the missing TLO's from your higher level transport, ala
Bret's example w/ TAXII or via your transport mechanism.

As soon as you add an ID to a STIX Bundle, you are now adding meaning
to the grouping and we loose the Bundle is just a set of (possibly)
unrelated STIX objects.

> From:	"Jordan, Bret" <bret.jordan@bluecoat.com>
> To:	Jason Keirstead/CanEast/IBM@IBMCA
> Cc:	Allan Thomson <athomson@lookingglasscyber.com>, Mark Davidson
>             <mdavidson@soltra.com>, "cti@lists.oasis-open.org"
>             <cti@lists.oasis-open.org>
> Date:	05/03/2016 02:03 PM
> Subject:	Re: [cti] Update from STIX Package renaming Mini-Group
> Sent by:	<cti@lists.oasis-open.org>
> 
> 
> 
> I agree with Jason... I know the request on the call was about how do you
> know if you did not get a bundle.  That seems to be an implementation /
> transport level issue, not a language level issue. Allan / Terry? Thoughts?
> Is there another way of doing what you asked without having an ID field?
> 
> 
> Thanks,
> 
> Bret
> 
> 
> 
> 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 May 3, 2016, at 10:08, Jason Keirstead <Jason.Keirstead@ca.ibm.com
>       > wrote:
> 
> 
> 
>       Open question - adding an identifier "so that it can be tracked",
>       implies that it SHOULD be tracked.
> 
>       As an implementer - why do I need to track bundles, as all a bundle
>       is is a whole bunch of content that may or may not be related?
> 
>       I would argue that we should not encourage the storage or tracking of
>       the bundle structure, and therefore they should not have IDs.
> 
>       -
>       Jason Keirstead
>       STSM, 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>Allan Thomson ---05/03/2016 12:23:49 PM---As discussed
>       on the call today I would like to propose that we add an identifier
>       attribute for the b
> 
>       From: Allan Thomson <athomson@lookingglasscyber.com>
>       To: Mark Davidson <mdavidson@soltra.com>, "cti@lists.oasis-open.org"
>       <cti@lists.oasis-open.org>
>       Date: 05/03/2016 12:23 PM
>       Subject: Re: [cti] Update from STIX Package renaming Mini-Group
>       Sent by: <cti@lists.oasis-open.org>
> 
> 
> 
> 
> 
>       As discussed on the call today I would like to propose that we add an
>       identifier attribute for the bundle so that it can be tracked.
> 
>       {
>       "type": "bundle",
>       "spec_version": "stix-2.0”,
>       “id”: “bundle--8e2e2d2b-17d4-4cbf-938f-98ee46b3cd3f"
>       "indicators": [
>       {
>       "type": "indicator",
>       "id": "indicator--8e2e2d2b-17d4-4cbf-938f-98ee46b3cd3f",
>       "created_by_ref": "source--f431f809-377b-45e0-aa1c-6a4751cae5ff",
>       "created_time": "2016-04-29T14:09:00.123456Z",
>       "revision": 1,
>       "modified_time: "2016-04-29T14:09:00.123456Z",
>       "object_marking_refs":
>       ["marking-definition--089a6ecb-cc15-43cc-9494-767639779123"],
>       "title": "Poison Ivy Malware",
>       "description": "This file is part of Poison Ivy",
>       "pattern": "file-object.hashes.md5 =
>       '3773a88f65a5e780c8dff9cdc3a056f3'"
>       }
>       ],
>       {
>       "type": "marking-definition",
>       "id": "marking-definition--089a6ecb-cc15-43cc-9494-767639779123",
>       "created_time": "2016-02-19T09:11:01Z",
>       "definition_type": "tlp",
>       "definition": {
>       "tlp": "GREEN"
>       }
>       }
>       }
> 
> 
>       From: "cti@lists.oasis-open.org" <cti@lists.oasis-open.org> on behalf
>       of Mark Davidson <mdavidson@soltra.com>
>       Date: Friday, April 29, 2016 at 9:56 AM
>       To: "cti@lists.oasis-open.org" <cti@lists.oasis-open.org>
>       Subject: [cti] Update from STIX Package renaming Mini-Group
> 
>       All,
> 
>       Here is a quick update from the STIX Package name mini-group. The
>       mini group is proposing:
>                   Renaming STIX-Package to STIX-Bundle
>                   STIX-bundle is simply a transport container
>                   STIX-Bundle is a grouping of STIX content that isn’t
>                   required to be related (it MIGHT be related, but being in
>                   the same bundle doesn’t mean it’s related)
>                   Removing all TLO Common Properties (with an open question
>                   about Data Markings)
>                               Removed properties: id, created_by_ref,
>                               created_time, revision, modified_time,
>                               revoked, revision_comment, confidence,
>                               object_markings_refs, granular_markings
>                   STIX-Bundle will keep the `spec_version` property
>                   All content in the bundle MUST be the same STIX version
>                   (identified by spec_version)
>       There is an open question about whether Data Markings should be in
>       the STIX-Bundle. Arguments for keeping it are:
>                   The group seemed to have consensus that Bundle-level
>                   markings were desired, but evidence was difficult for the
>                   mini-group to find.
>                   Certain sharing communities would appreciate the
>                   simplicity of package marking.
>                   It makes objects look smaller and is more natural for
>                   people who are new to the specs
>       Arguments for removing it are:
>                   Data Marking at the bundle level is “two ways of doing
>                   things” - on-the-object markings and on-the-bundle
>                   markings
>                   TLO signatures will not be valid when the Bundle-level
>                   markings are used
> 
>       Thank you.
>       -Mark
> 
> 
> [attachment "signature.asc" deleted by Jason Keirstead/CanEast/IBM]
> 



-- 
John-Mark


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