Bret,
I feel like this line
If the STIX object does not contain either a modified or created timestamp, then this filter should return the
latest version according to the server.
does not convey (or goes against) the purpose of using the
version filter. I am having a problem with the word latest on that line as not always we would want to resolve for the latest object in a server. Perhaps something like the following would allow for the resolution of objects without created or modified
time.
### BEGIN
If the STIX object does not contain either a modified or created timestamp, then this filter should use the date and time when the object was added to the server as a method to
disambiguate the object to be returned.
### END
Any thoughts?
Thanks,
Emmanuelle
From: <>
On Behalf Of Bret Jordan
Sent: Wednesday, January 23, 2019 4:49 AM
To:
Subject: [EXT] [cti] TAXII Version Filter - Please review
All,
Drew, Allan, and I took a stab at fixing the text on the version filter parameter so that can work with a STIX object that does not have a modified timestamp (marking-definition object). The text from section 3.4.1 now
reads:
### BEGIN
For STIX objects, this filter option requests objects whose modified time matches exactly the provided value and the value MUST follow the rules for timestamp as defined in [STIX™ Version 2.0.
Part 1: STIX Core Concepts]. For STIX objects that do not contain a modified timestamp (ex. the marking-definition object), then this filter should match on the created timestamp. If the STIX object does not contain either a
modified or created timestamp, then this filter should return the latest version according to the server.
For example: "2016-01-01T01:01:01.000Z" tells the server to return the exact STIX object(s) that
matched the modified time or created time (in the case of a marking-definition object) of "2016-01-01T01:01:01.000Z".
### END
The extra caveat for not having either a modified or created timestamp deals with the potential cyber observable changes. Please review and comment on the list with any concerns or changes.
Bret
