Re: [cti-stix] Proposal - Top Level Relationship Object

["Jason Keirstead" <Jason.Keirstead@ca.ibm.com>]

Shouldn't there be a statement of who is asserting the relationship? "created_by" or "asserted_by" or similar?

Otherwise, as a STIX document gets passed around with people asserting more and more relationships with data, how do you know the originator of that information.

Is this assumed to be a component of the ID somehow?
-
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


"Wunder, John A." ---2015/07/30 09:04:36 AM---Thanks Bret, good points. Updated and removed the redundancy of both occurrence and optional/require

From: "Wunder, John A." <jwunder@mitre.org>
To: "Thompson, Dean" <Dean.Thompson@anz.com>, "'Jordan, Bret'" <bret.jordan@bluecoat.com>
Cc: "'Patrick Maroney'" <Pmaroney@Specere.org>, "'Terry MacDonald'" <terry.macdonald@threatloop.com>, Jason Keirstead/CanEast/IBM@IBMCA, "'cti-stix@lists.oasis-open.org'" <cti-stix@lists.oasis-open.org>, "'Chris O'Brien'" <cobrien@cert.gov.uk>, "'JG on CTI-TC'" <jg@ctin.us>, "Baker, Jon" <bakerj@mitre.org>, "'Aharon Chernin'" <achernin@soltra.com>
Date: 2015/07/30 09:04 AM
Subject: Re: [cti-stix] Proposal - Top Level Relationship Object
Sent by: <cti-stix@lists.oasis-open.org>

---

Thanks Bret, good points. Updated and removed the redundancy of both occurrence and optional/required statements.

ID [1]: The ID of the relationship
Version [1]: The version of the relationship; a simple number to be used with the ID for version control (instead of timestamp)
Type [1]: The “type” of relationship being expressed. (Not sure of how this works yet)
Descriptions [0..N]: Words about the relationship.
Source_ID [1] : The ID of one or more source entities in the relationship as a URI (not QName)
Target_IDs [1..N]: The ID of one or more targets in the relationship as a URI (not QName)
Start_Time [1]: A timestamp in UTC stating when the relationship between the objects started, or the text 'unknown'.
End_Time [1]: A timestamp in UTC stating when the relationship between the objects ended, or the text 'ongoing', or the text 'unknown'.
Reliability/Confidence [1]: A measure of confidence in the relationship using the Information Reliability scale.
Timestamp [1]: A timestamp in UTC stating when the relationship object was created.

Also I apparently missed that Description is multiple elements. Is the intent behind that multiple languages? Multiple markings? Multiple paragraphs? If we do that, does that mean description needs to be something other than a plain array of strings?

Keep in mind that STIX 1.2 is complicated for a reason. If we try to do everything that STIX 1.2 does we will end up with something just as complicated. Sometimes a simple 90% solution is better than a very complicated 99.9% solution. (If you can't tell, I would prefer to allow a single string description.)

John


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