OASIS Cyber Threat Intelligence (CTI) TC

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  • 1.  RE: [cti] Re: Update from STIX Package renaming Mini-Group

    Posted 04-29-2016 17:44



    Hi Mark,

    Would someone provide samples to show the differences of these changes?

    Thanks,

    -Marlon


     


    From: cti@lists.oasis-open.org on behalf of John Anderson
    Sent: Friday, April 29, 2016 1:32:38 PM
    To: Mark Davidson; cti@lists.oasis-open.org
    Subject: [cti] Re: Update from STIX Package renaming Mini-Group




    Disclaimer: This is my own personal opinion, in no way representative of any professional connections or organizations I'm involved with.


    Hmm...There's something odd about "STIX-Bundle". I'm not sure I can say what, exactly.


    I wonder if any of these synonyms to "bundle" would work?  http://www.thesaurus.com/browse/bundle


    Here are some alternatives I find appealing:


    STIX-Assortment (evokes a box of chocolates)


    STIX-Box (evokes the "toss everything in" use case)


    STIX-Pile (evokes Autumn and kids jumping in the leaves)


    The funny thing is that this synonym seems to make the most sense, because of the whole "shipping things around" analogy:


    STIX-Package


    Happy Friday, everyone!
    JSA


    PS-If we could expand our search, we could use words that evoke "tying together for transport". Like "STIX-ZipTie" or "STIX-Rope".  Then again, there's something musical about "STIX-Band".
    Come sail away, come sail away...


    PPS-Thanks for reading. Sometimes a little humor can help lighten things up. I hope this has.












    Bundle Synonyms, Bundle Antonyms
    Thesaurus.com

    www.thesaurus.com

    Synonyms for bundle at Thesaurus.com with free online thesaurus, antonyms, and definitions. Dictionary and Word of the Day.








    From: cti@lists.oasis-open.org <cti@lists.oasis-open.org> on behalf of Mark Davidson <mdavidson@soltra.com>
    Sent: Friday, April 29, 2016 12:56:45 PM
    To: 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










  • 2.  Re: [cti] Update from STIX Package renaming Mini-Group

    Posted 04-29-2016 20:17
    Currently we have: {   type : package ,   id : package--5e2cb95f-30c1-46d3-8b39-d97d34d82d3c ,   created_by_ref : source-- 5e2cb95f-30c1-46d3-8b39-d97d34AAAAAA ,   created_time : 2016-04-29T14:09:00.123456Z ,   revision : 1,   modified_time:  2016-04-29T14:09:00.123456Z ,   spec_version : stix-2.0 ,   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 ,       title : Poison Ivy Malware ,       description : This file is part of Poison Ivy ,       pattern : file-object.hashes.md5 = '3773a88f65a5e780c8dff9cdc3a056f3'     }   ] } What we are proposing is: {   type : bundle ,   spec_version : stix-2.0 ,   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 ,       title : Poison Ivy Malware ,       description : This file is part of Poison Ivy ,       pattern : file-object.hashes.md5 = '3773a88f65a5e780c8dff9cdc3a056f3'     }   ] } Basically the bundle will be a simple wrapper for transmitting bulk STIX content without any implied meaning or context.  It will also not contain any top level object properties as the bundle should not be versioned or IDed or anything.  A consumer would just throw the outer layer away after it received and processed the contents.   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 Apr 29, 2016, at 11:44, Taylor, Marlon < Marlon.Taylor@hq.dhs.gov > wrote: Hi Mark, Would someone provide samples to show the differences of these changes? Thanks, -Marlon   From:   cti@lists.oasis-open.org   on behalf of John Anderson Sent:   Friday, April 29, 2016 1:32:38 PM To:   Mark Davidson;   cti@lists.oasis-open.org Subject:   [cti] Re: Update from STIX Package renaming Mini-Group Disclaimer: This is my own personal opinion, in no way representative of any professional connections or organizations I'm involved with. Hmm...There's something odd about STIX-Bundle . I'm not sure I can say what, exactly. I wonder if any of these synonyms to bundle would work?  http://www.thesaurus.com/browse/bundle Here are some alternatives I find appealing: STIX-Assortment (evokes a box of chocolates) STIX-Box (evokes the toss everything in use case) STIX-Pile (evokes Autumn and kids jumping in the leaves) The funny thing is that this synonym seems to make the most sense, because of the whole  shipping things around  analogy: STIX-Package Happy Friday, everyone!   <OutlookEmoji-


  • 3.  RE: [cti] Update from STIX Package renaming Mini-Group

    Posted 04-29-2016 22:45



    Can we get examples for the open question on markings?

    Thanks,

    -Marlon


     


    From: cti@lists.oasis-open.org on behalf of Jordan, Bret
    Sent: Friday, April 29, 2016 4:17:07 PM
    To: Taylor, Marlon
    Cc: John Anderson; Mark Davidson; cti@lists.oasis-open.org
    Subject: Re: [cti] Update from STIX Package renaming Mini-Group


    Currently we have:


    {
      "type": "package",
      "id": "package--5e2cb95f-30c1-46d3-8b39-d97d34d82d3c",
      "created_by_ref": "source-- 5e2cb95f-30c1-46d3-8b39-d97d34AAAAAA",
      "created_time": "2016-04-29T14:09:00.123456Z",
      "revision": 1,
      "modified_time:  "2016-04-29T14:09:00.123456Z",
      "spec_version": " stix-2.0",
      "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",
          "title": "Poison Ivy Malware",
          "description": "This file is part of Poison Ivy",
          "pattern": "file-object.hashes.md5 = '3773a88f65a5e780c8dff9cdc3a056f3'"
        }
      ]
    }



    What we are proposing is:

    {
      "type": "bundle",
      "spec_version": " stix-2.0",
      "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",
          "title": "Poison Ivy Malware",
          "description": "This file is part of Poison Ivy",
          "pattern": "file-object.hashes.md5 = '3773a88f65a5e780c8dff9cdc3a056f3'"
        }
      ]
    }



    Basically the bundle will be a simple wrapper for transmitting bulk STIX content without any implied meaning or context.  It will also not contain any top level object properties as the bundle should not be versioned or IDed or anything.  A consumer
    would just throw the outer layer away after it received and processed the contents.  












    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 Apr 29, 2016, at 11:44, Taylor, Marlon < Marlon.Taylor@hq.dhs.gov > wrote:

    Hi
    Mark,

    Would
    someone provide samples to show the differences of these changes?

    Thanks,

    -Marlon


     


    From:   cti@lists.oasis-open.org   on
    behalf of John Anderson
    Sent:   Friday, April 29, 2016 1:32:38 PM
    To:   Mark Davidson;   cti@lists.oasis-open.org
    Subject:   [cti] Re: Update from STIX Package renaming Mini-Group





    Disclaimer: This is my own personal opinion, in no way representative of any professional connections or organizations I'm involved with.


    Hmm...There's something odd about "STIX-Bundle". I'm not sure I can say what, exactly.


    I wonder if any of these synonyms to "bundle" would work?  http://www.thesaurus.com/browse/bundle


    Here are some alternatives I find appealing:


    STIX-Assortment (evokes a box of chocolates)


    STIX-Box (evokes the "toss everything in" use case)


    STIX-Pile (evokes Autumn and kids jumping in the leaves)


    The funny thing is that this synonym seems to make the most sense, because of the whole "shipping things around" analogy:


    STIX-Package


    Happy Friday, everyone!   <OutlookEmoji-


  • 4.  Re: [cti] Update from STIX Package renaming Mini-Group

    Posted 04-29-2016 23:06
    Here you go.... Currently you can apply the data markings at the package level and have them inherit down to the all the objects in the package.   {   type : package ,   id : package--5e2cb95f-30c1-46d3-8b39-d97d34d82d3c ,   created_by_ref : source--5e2cb95f-30c1-46d3-8b39-d97d34AAAAAA ,   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 ],   spec_version : stix-2.0 ,   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 ,       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     }   } } What we are proposing is just putting the reference on each TLO instead of trying to inherit it from the Bundle / Package.  {   type : bundle ,   spec_version : stix-2.0 ,   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     }   } } 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 Apr 29, 2016, at 16:44, Taylor, Marlon < Marlon.Taylor@hq.dhs.gov > wrote: Can we get examples for the open question on markings? Thanks, -Marlon   Attachment: signature.asc Description: Message signed with OpenPGP using GPGMail


  • 5.  RE: [cti] Update from STIX Package renaming Mini-Group

    Posted 04-29-2016 23:17
    Is this example correct? -Marlon   From: cti@lists.oasis-open.org on behalf of Jordan, Bret Sent: Friday, April 29, 2016 7:05:43 PM To: Taylor, Marlon Cc: John Anderson; Mark Davidson; cti@lists.oasis-open.org Subject: Re: [cti] Update from STIX Package renaming Mini-Group Here you go.... Currently you can apply the data markings at the package level and have them inherit down to the all the objects in the package.   {   "type": "package",   "id": "package--5e2cb95f-30c1-46d3-8b39-d97d34d82d3c",   "created_by_ref": "source--5e2cb95f-30c1-46d3-8b39-d97d34AAAAAA",   "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"],   "spec_version": "stix-2.0",   "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",       "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"     }   } } What we are proposing is just putting the reference on each TLO instead of trying to "inherit" it from the Bundle / Package.  {   "type": "bundle",   "spec_version": "stix-2.0",   "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"     }   } } 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 Apr 29, 2016, at 16:44, Taylor, Marlon < Marlon.Taylor@hq.dhs.gov > wrote: Can we get examples for the open question on markings? Thanks, -Marlon  


  • 6.  Re: [cti] Update from STIX Package renaming Mini-Group

    Posted 04-29-2016 23:47
    It should be.  Why?? Do you see something wrong with it?  We're expecting something different?   Bret  Sent from my Commodore 64 On Apr 29, 2016, at 5:17 PM, Taylor, Marlon < Marlon.Taylor@hq.dhs.gov > wrote: Is this example correct? -Marlon   From: cti@lists.oasis-open.org on behalf of Jordan, Bret Sent: Friday, April 29, 2016 7:05:43 PM To: Taylor, Marlon Cc: John Anderson; Mark Davidson; cti@lists.oasis-open.org Subject: Re: [cti] Update from STIX Package renaming Mini-Group Here you go.... Currently you can apply the data markings at the package level and have them inherit down to the all the objects in the package.   {   "type": "package",   "id": "package--5e2cb95f-30c1-46d3-8b39-d97d34d82d3c",   "created_by_ref": "source--5e2cb95f-30c1-46d3-8b39-d97d34AAAAAA",   "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"],   "spec_version": "stix-2.0",   "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",       "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"     }   } } What we are proposing is just putting the reference on each TLO instead of trying to "inherit" it from the Bundle / Package.  {   "type": "bundle",   "spec_version": "stix-2.0",   "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"     }   } } 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 Apr 29, 2016, at 16:44, Taylor, Marlon < Marlon.Taylor@hq.dhs.gov > wrote: Can we get examples for the open question on markings? Thanks, -Marlon  


  • 7.  RE: [cti] Update from STIX Package renaming Mini-Group

    Posted 05-02-2016 17:53
    I didn't see a container for the "type": "marking-definition" objects. Is "object_marking_refs": [""], part of core? -Marlon   From: cti@lists.oasis-open.org on behalf of Jordan, Bret Sent: Friday, April 29, 2016 7:47:12 PM To: Taylor, Marlon Cc: John Anderson; Mark Davidson; cti@lists.oasis-open.org Subject: Re: [cti] Update from STIX Package renaming Mini-Group It should be.  Why?? Do you see something wrong with it?  We're expecting something different?   Bret  Sent from my Commodore 64 On Apr 29, 2016, at 5:17 PM, Taylor, Marlon < Marlon.Taylor@hq.dhs.gov > wrote: Is this example correct? -Marlon   From: cti@lists.oasis-open.org on behalf of Jordan, Bret Sent: Friday, April 29, 2016 7:05:43 PM To: Taylor, Marlon Cc: John Anderson; Mark Davidson; cti@lists.oasis-open.org Subject: Re: [cti] Update from STIX Package renaming Mini-Group Here you go.... Currently you can apply the data markings at the package level and have them inherit down to the all the objects in the package.   {   "type": "package",   "id": "package--5e2cb95f-30c1-46d3-8b39-d97d34d82d3c",   "created_by_ref": "source--5e2cb95f-30c1-46d3-8b39-d97d34AAAAAA",   "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"],   "spec_version": "stix-2.0",   "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",       "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"     }   } } What we are proposing is just putting the reference on each TLO instead of trying to "inherit" it from the Bundle / Package.  {   "type": "bundle",   "spec_version": "stix-2.0",   "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"     }   } } 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 Apr 29, 2016, at 16:44, Taylor, Marlon < Marlon.Taylor@hq.dhs.gov > wrote: Can we get examples for the open question on markings? Thanks, -Marlon