I too would support the addition of this defined relationship. The facility to create a “block” COA would be a significant step forward for us getting
indicators into our Protective DNS Service.
Best wishes,
Iain.
--
Iain B.
Cyber Operations
National Cyber Security Centre
| Mobile: 07469 357 625 | CISP username: iainb@ncsc
https://www.ncsc.gov.uk
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From: <>
On Behalf Of Thompson, Dean
Sent: 16 July 2018 14:54
To: 'Jason Keirstead' <>; '' <>
Subject: RE: [cti-stix] Proposal: Addition of defined relationship from COA to Indicator
Hi!,
I would support this initiative, it is a good idea and simplifies the relationship between the two.
Regards,
Dean
From: [mailto:]
On Behalf Of Jason Keirstead
Sent: Monday, 16 July 2018 11:13 PM
To:
Subject: [cti-stix] Proposal: Addition of defined relationship from COA to Indicator
Scenario: Lets say you want to have an indicator feed that you want to provide to a DNS server, in order to either deny or sinkhole
those IP addresses and/or domains. As such, you want to provide Course of Action that are linked to those indicators, to tell the DNS server what to do.
Currently, COA only has "mitigates" relationships to Attack Pattern, Malware, Tool, and Vulnerability.
As such, one is forced to either
(a) Create "dummy" empty Attack Pattern objects to create this relationship
(b) Make your own SRO for "mitigates" directly from COA to Indicator
In this use case, there is no attack pattern, or any of these objects. You simply want to be able to say "If you see X, do Y".
I would like to request / suggest that we add a defined relationship from COA to Indicator called "blocks", or "denies", "mitigates", or something to that effect so that this
use case can be standardized, as it is extremely common.
-
Jason Keirstead
Lead Architect - IBM Security Cloud
www.ibm.com/security
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