Re: [cti-stix] RE: [cti-users] STIX 2.1 Propsal

Hi Jason,

To be clear this object isn't specifically for attribution if you were meaning attribution of attacks to certain threat actors. This object simply allows an organisation to agree or disagree with an 'assertion' that another organisation has made (i.e. object they have published).

I expect that it would be most commonly used to either agree or disagree with a relationship between two other STIX Data Objects (SDOs), as relationships between objects are likely to involve more uncertainty and guesswork. It can also be used to agree or disagree with a specific SDO (e.g. An identity object) but I believe this will be much less common.

The idea behind the object is to allow recipients within a threat intelligence sharing community to work out which threat intelligence objects are commonly agreed (and therefore can be potentially be more trusted), and which threat intelligence is more contentious and need to be treated more like a guess. It is important to remember that each original object published is a single organisations assertion of the truth, so providing a way for other organisations to comment as to if they agree/disagree with the original assertion of the truth adds the ability for multiple organisations to effectively agree with that assertion of truth, or disagree with it. In either case, that is valuable information for recipients.

Cheers

Terry MacDonald

Cosive

On 10 Jan. 2017 05:08, "Jason Hammerschmidt" <Jason.Hammerschmidt@ieso.ca> wrote:

I believe this is a valuable addition. Like other User Generated Content (UGC), attribution is a requirement for the content to be trusted and used, therefore, if added, attribution will be required in some manner for it to be adopted. I know many people are concerned about attribution but I for one am happy to provide it in this field, in fact I think it will be required moving forward for full adoption, less we only rely a limited set of authoritative feeds.

From: cti-users@lists.oasis-open.org [mailto:cti-users@lists.oasis-open.org] On Behalf Of Terry MacDonald
Sent: December 25, 2016 3:24 AM
To: cti-stix@lists.oasis-open.org; cti-users@lists.oasis-open.org
Subject: [cti-users] STIX 2.1 Propsal - Opinion Object

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Hi All,

I'd like to propose the Opinion Object for STIX 2.1.

The Opinion object is an object that allows the creator of the Opinion object to agree/disagree with any other STIX Data Object or STIX Relationship Object. It will allow an Organization to disagree with a relationship between a Threat Actor and a Campaign for example, or agree with the contents of an Course of Action.

This is the first step towards consumers being able to crowd-source the opinion of the community, which will help newcomers to the threat intelligence sharing groups better understand which threats have a high degree of community agreement and which are contentious.

Further details in the attached PDF.

Cheers

Terry MacDonald | Chief Product Officer

M: +64 211 918 814

E: terry.macdonald@cosive.com

W: www.cosive.com

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