Tēnā koe Marcus,

 

Thank you for your Official Information Act request.

 

We will endeavour to respond to your request as soon as possible and, in
any event, no later than 20 working days after the day that your request
was received. If we are unable to respond to your request by then, we will
notify you of an extension of that timeframe.

 

If you have any queries, please feel free to contact
[GCSB request email].

 

Ngā mihi,

GCSB

 

 

-----Original Message-----
From: Marcus <[FOI #34954 email]>
Sent: Wednesday, 24 June 2026 12:11 PM
To: Information (GCSB) <[GCSB request email]>
Subject: Official Information request - Mythos/Fable Revocation Response

 

[You don't often get email from
[1][FOI #34954 email]. Learn why this is
important at [2]https://aka.ms/LearnAboutSenderIdentific... ]

 

Dear Government Communications Security Bureau,

 

I am interested in requesting the following information regarding the
recent export control directive issued by the US government in regards to
Anthropic's Mythos/Fable 5 models:

 

1. Any type of risk assessment or gap analysis prepared by the GCSB/NCSC
regarding loss of access to the Mythos/Fable 5 models as it relates to New
Zealand's ability to defend itself against cyber threats 2. Any briefings,
aide-memoires or other advice provided to the Minister responsible for the
GCSB, DPMC and/or the National Security and Resilience Group regarding the
impact of Mythos/Fable 5's revocation 3. Any document capturing steps
taken, or options considered, to offset or replace the capabilities
provided by the now-revoked Mythos/Fable 5 models 4. Any document that
assesses New Zealand's reliance on foreign-controlled AI capabilities 5.
Any correspondence with Five Eyes partners regarding the revocation of
Mythos/Fable 5 6. Any document, dated before 12 June 2026 (when the
Mythos/Fable 5 revocation happened), identifying the risk that NZ access
to a US-controlled frontier AI capability could be withdrawn

 

If any of the above are required to be withheld, I would like to receive a
schedule listing those documents by date, document type, the general role
of the author and if possible, a general summary of contents

 

Yours faithfully,

 

Marcus

 

-------------------------------------------------------------------

 

This is an Official Information request made via the FYI website.

 

Please use this email address for all replies to this request:

[3][FOI #34954 email]

 

Is [4][GCSB request email] the wrong address for Official Information
requests to Government Communications Security Bureau? If so, please
contact us using this form:

[5]https://aus01.safelinks.protection.outlo...

 

Disclaimer: This message and any reply that you make will be published on
the internet. Our privacy and copyright policies:

[6]https://aus01.safelinks.protection.outlo...

 

If you find this service useful as an Official Information officer, please
ask your web manager to link to us from your organisation's OIA or LGOIMA
page.

 

 

-------------------------------------------------------------------

 

--------------------------------------------------------------------------

This electronic message, together with any attachments, contains
information that is provided in confidence and may be subject to legal
privilege. Any classification markings must be adhered to. If you are not
the intended recipient, you must not peruse, disclose, disseminate, copy
or use the message in any way. If you have received this message in error,
please notify us immediately by return email and then destroy the original
message. The New Zealand Intelligence Community (NZIC) and the departments
comprising the NZIC accepts no responsibility for changes to this e-mail,
or to any attachments, after its transmission from NZIC. This
communication may be accessed or retained for information assurance
purposes. Thank you.

--------------------------------------------------------------------------

References

Visible links
1. mailto:[FOI #34954 email]
2. https://aka.ms/LearnAboutSenderIdentific...
3. mailto:[FOI #34954 email]
4. mailto:[GCSB request email]
5. https://fyi.org.nz/change_request/new?bo...
6. https://fyi.org.nz/help/officers

hide quoted sections

[UNCLASSIFIED]

Dear Marcus Crane

 

We refer to your official information request dated 24 June for
information relating to Anthropic's Mythos, set out in your email below.

 

The Official Information Act 1982 requires that we advise you of our
decision on your request no later than 20 working days after the day that
we received your request.  Unfortunately, it will not be possible to meet
that time limit and we are, therefore, writing to notify you of an
extension of the time to make our decision, to 21 August 2026.

This extension is necessary because consultations necessary to make a
decision on your request are such that a proper response cannot reasonably
be made within the original time limit.

 

If you wish to discuss any aspect of your request with us, including this
decision, please feel free to contact [1][GCSB request email].

 

You have the right to seek an investigation and review by the Ombudsman of
this decision.  Information about how to make a complaint is available at
[2]www.ombudsman.parliament.nz or freephone 0800 802 602.

 

Kind regards

 

GCSB

GCSB 

[3]www.gcsb.govt.nz 

--------------------------------------------------------------------------

From: Marcus <[FOI #34954 email]>
Sent: Wednesday, June 24, 2026 12:11
To: Information (GCSB) <[GCSB request email]>
Subject: Official Information request - Mythos/Fable Revocation Response
 
[You don't often get email from
[FOI #34954 email]. Learn why this is
important at [4]https://aka.ms/LearnAboutSenderIdentific... ]

Dear Government Communications Security Bureau,

I am interested in requesting the following information regarding the
recent export control directive issued by the US government in regards to
Anthropic's Mythos/Fable 5 models:

1. Any type of risk assessment or gap analysis prepared by the GCSB/NCSC
regarding loss of access to the Mythos/Fable 5 models as it relates to New
Zealand's ability to defend itself against cyber threats
2. Any briefings, aide-memoires or other advice provided to the Minister
responsible for the GCSB, DPMC and/or the National Security and Resilience
Group regarding the impact of Mythos/Fable 5's revocation
3. Any document capturing steps taken, or options considered, to offset or
replace the capabilities provided by the now-revoked Mythos/Fable 5 models
4. Any document that assesses New Zealand's reliance on foreign-controlled
AI capabilities
5. Any correspondence with Five Eyes partners regarding the revocation of
Mythos/Fable 5
6. Any document, dated before 12 June 2026 (when the Mythos/Fable 5
revocation happened), identifying the risk that NZ access to a
US-controlled frontier AI capability could be withdrawn

If any of the above are required to be withheld, I would like to receive a
schedule listing those documents by date, document type, the general role
of the author and if possible, a general summary of contents

Yours faithfully,

Marcus

-------------------------------------------------------------------

This is an Official Information request made via the FYI website.

Please use this email address for all replies to this request:
[FOI #34954 email]

Is [GCSB request email] the wrong address for Official Information
requests to Government Communications Security Bureau? If so, please
contact us using this form:
[5]https://aus01.safelinks.protection.outlo...

Disclaimer: This message and any reply that you make will be published on
the internet. Our privacy and copyright policies:
[6]https://aus01.safelinks.protection.outlo...

If you find this service useful as an Official Information officer, please
ask your web manager to link to us from your organisation's OIA or LGOIMA
page.

-------------------------------------------------------------------

[UNCLASSIFIED]

--------------------------------------------------------------------------

This electronic message, together with any attachments, contains
information that is provided in confidence and may be subject to legal
privilege. Any classification markings must be adhered to. If you are not
the intended recipient, you must not peruse, disclose, disseminate, copy
or use the message in any way. If you have received this message in error,
please notify us immediately by return email and then destroy the original
message. The New Zealand Intelligence Community (NZIC) and the departments
comprising the NZIC accepts no responsibility for changes to this e-mail,
or to any attachments, after its transmission from NZIC. This
communication may be accessed or retained for information assurance
purposes. Thank you.

--------------------------------------------------------------------------

References

Visible links
1. mailto:[GCSB request email]
mailto:[GCSB request email]
2. http://www.ombudsman.parliament.nz
http://www.ombudsman.parliament.nz/
3. Original URL: http://www.gcsb.govt.nz/. Click or tap if you trust this link.
http://www.gcsb.govt.nz/
4. https://aka.ms/LearnAboutSenderIdentific...
5. https://fyi.org.nz/change_request/new?bo...
6. https://fyi.org.nz/help/officers

hide quoted sections