1. Hatena Co., Ltd. (“Hatena”, “we”, “us”, or “our”) acquires from users the minimum information required to
offer all services as well as applications for the promotion of use (the “Services”) that are available in the
Hatena Website (the “Website"). We are committed to safeguarding the personal information acquired from Users with
the utmost care.
2. The Website（Provided on "hatena.ne.jp" ）is a licensee of the TRUSTe privacy program. Please see Japan Privacy Accreditation Council for the details of
TRUSTe.
3. Hatena is a covered business operator for “Mobile Content
Forum (MCF)” that has been accredited as an accredited personal information protection organization as
specified under Article 47 of the Act on the Protection of Personal Information.
1. When you register with the Services as a User, we will ask you to provide us with your email-address. The
information is referred to as the “User Registration Personal Information”.
2. We automatically receive and record information in our server from the User’s browser as an access log,
including the User’s IP address, cookie information, pages viewed by the User, and the User’s environment. We also
automatically receive and record in our server the information regarding websites outside the Services from Users
who use certain features of applications. However, this information does not include information which can
identify an individual, and we use the information for the purpose of managing and analyzing the use of the
Website. Additionally, the type and details of the information to be obtained are recorded separately in the help
page and such of each application.
3. (Obsolete) We automatically receive and record the individual identification numbers in our server from
mobile devices used by Users.
4. Where the User uses any services utilizing location information, we receive and record location information
in our server from devices which are capable of sending location information, including a User’s mobile devices or
PCs.
5. We may ask the User to provide us with his/her address, name(name of corporate person in charge), telephone
number, credit card information, account number and the like whenever necessary for the shipment of goods,
purchase, job advertisement, advertising and marketing research.
6. We may receive notices which may include personal information of the Users or any third party, or acquire any
disclosed personal information by reasonable means for the investigations of any violation of the terms of use.
7. If the Registered Users use the Services which allow for registration of any third party’s e-mail address as
the destination of information, we receive and record the information registered in our server.
8. We will not add any information acquired by means other than those set forth in (1) through (7) above to the
personal information acquired through the Services.
1. We will use the personal information under the following circumstances:
a. When a User uses the Services such as receiving an email delivered as a notification or logging in to use
the service.;
b. When we display the information optimized for each User on the Services, including postings of
information which we believe to be of interest to the User;
c. When analyzing the usage of our services for the purpose of improving, developing, marketing or improving
the quality of inquiries.;
d. When we use statistical information regarding the Users to explain the Services to the Users or any third
party; and
e. When it is necessary for individual processing and transactions such as making contact with Users or any
third party, verifying identification, investigating and addressing a violation of the terms of use,
investigating an inquiry, and processing a shipment of goods.
2. We will not view or use the personal information for any purpose other than those described above.
1. We will not disclose or provide personal information to any third party except for in the following
circumstances:
a. When we obtain consent from the relevant User for the disclosure of personal information;
b. When we deem it necessary for the operation of the Services, including displaying of an access log.
However, in such cases, we will not disclose the User Registration Personal Information;
c. When we use the minimum personal information of the User required for for our collaborated business with
business partners and advertisers, and obtain consent from the relevant User. However, in such cases, the
receiving party may not use the personal information disclosed by Hatena for any purpose other than the
performance of the collaborated business;
d. When we have a legal obligation to disclose personal information including in circumstances where we are
required to do so by court order, or are requested to disclose the information of senders pursuant to the Act
on the Limitation of Liability for Damages of Specified Telecommunications Service Providers and the Right to
Demand Disclosure of Identification Information of the Senders (the Provider Liability Limitation Act);
e. When we have a reason to suspect that a User is in violation of the terms of use, and consider that it is
necessary for the protection of our rights, property, services or the like; and
f. When there is an urgent need and an imminent danger to the life, body, or property of a User or any third
party, and it is difficult to obtain consent from the relevant User.
1. In principle, we make available for the Registered User himself/herself to view, modify or delete his/her
User Registration Personal Information from My Hatena after he/she has logged into the Services. We also
deal with such requests by e-mail after confirming the identity of the relevant Registered User with the
prescribed procedure. Also, in the same manner, the Registered Users may elect whether or not to subscribe to any
mail magazine.
2. Obsolete
due to the termination of service.
3. Please see the Registration Change regarding
viewing, modifying and deleting your User Registration Personal Information.
4. Once the User completes a procedure for a withdrawal from the Services, we will delete his/her User
Registration Personal Information excluding the User’s name after keeping the information for a certain period of
time. We may keep the User Registration Personal Information prior to change or deletion as a backup for a certain
period time for the purpose of preventing any User from suffering disadvantage due to operational errors, or
conducting investigations in the event that we find any illegal acts by the User including cases where the User
withdrew from the Services immediately after he/she has posted information in violation of the terms of use. We
will not use the User Registration Personal Information of the Users in the Services after their withdrawal from
the Services. We will keep User’s name even after the User’s withdrawal from the Services for the purpose of
preventing any difficulties in the operation of our services.
1. Only the relevant User who has logged into the Services with the correct User’s name and password can view
his/her own User Registration Personal Information and his/her privacy is protected from other Users and any third
party.
2. We use SSL encryption to protect data in the Services whenever necessary for the protection of data
transmission.
3. We prohibit any person other than our staff to refer to the User Registration Personal Information.
Furthermore, we keep the User Registration Personal Information in a locked and safe place, and will not bring the
information outside the section managed by us.
4. We execute a confidentiality agreement with our staff and obligate them to comply with the security policy
established by us.
1. We use cookies for the purpose of checking the login status of Registered Users, measuring the number of
unique Users, improving User experience, and authenticating Users. Cookies work as follows:
a. When a User accesses the Services, we send cookies to the User’s browser to identify the User.
b. When the User is logged into the Services, we send cookies to the User’s browser to identify the relevant
User who has logged into the Services. Furthermore, when the User makes an authentication in the Services, we
send cookies to identify the authenticated User.
c. When the User permits the receiving of cookies in his/her browser’s settings, cookie information will be
stored in the computer used by the User.
d. When the User sets his/her web browser to allow sending and receiving of cookies, the web server receives
cookie information from the User’s browser. However, for privacy protection, the User’s bowser only sends
cookies which are sent by the relevant web server itself.
e. The User may refuse to allow the sending and receiving of cookies by selecting “Refuse to send or receive
cookies” in the cookie send/receive settings. If the User does this, the User may not be able to use any
Services which require his/her login.
2. Cookies may be used by the advertisements displayed on the Services. Where this occurs, the use of cookies by
the advertisers shall be governed by each of advertiser’s own privacy policy.
3. We do not support the Do Not Track browser option.
1. This service uses cookies, HTML tags, JavaScript code, SDKs, etc., on our website and app to analyze user
behavior and deliver personalized advertising. In the process, we collect user information. Additionally, some of
these components allow third-party companies to directly collect information. However, the cookie information
collected by these third-party companies is not provided or disclosed to us. Instead, it is managed according to
the privacy policies established by those third-party companies. For more details regarding externally transmitted
information, please refer to the "External Transmission of
User Information" section.
1. If the User voluntarily discloses his/her personal information on the Website, such information may be
collected or wrongfully used by any third party. In such cases, we shall assume no responsibility therefor.
2. Unless otherwise specifically set forth in the Services, any website or service of any third party which is
linked from the Services establishes its own provisions for the protection of personal information, which is
independent from ours. We assume no obligation or responsibility with regard to these independent provisions and
activities. The User should confirm the terms of use and other provisions established by each website before
he/she provides his/her personal information.
1. We may revise all or part of this Privacy Policy in future. In case of any material change to this Privacy
Policy, we will notify the Users in a clear manner such as posting the changes on the Services.
2. Whenever we make any change/additions to the purpose of use, the User shall have the right to choose whether
or not we can use his/her personal information in the manner changed or added.
1. Our personal information administrator is as follows: Yomiurikyoto Building 7th Floor,630
Shichikannoncho, Rokkaku-dori,Karasuma-sagaru, Nakagyo-ku, Kyoto-shi, Kyoto, Japan Yoshiomi Kurisu,
President and Representative Director of Hatena Co., Ltd.
1. If you have any comments/complaints/claims/Disclosure Request concerning our privacy practices, please
contact us at cs@hatena.ne.jp. We will contact you by e-mail after confirming
your comment/complaint/claim, and will endeavor to address your inquiry in an appropriate manner.
2. If your inquiry has not been satisfactorily addressed, please contact one of the contacts below
2. Mobile Content Forum (MCF) Dai-3 Ito Building 603, Ebisu 4-4-5, Shibuya-ku, Tokyo, Japan
150-0013 soudan@mcf.or.jp Tel: 3-5449-6469
3. A person resident in an EU Member State and subject to the GDPR should contact cs@hatena.ne.jp in the same
way as 1. to exercise their rights under the GDPR. If the inquiry is not handled appropriately, you may file a
complaint with the supervisory authorities.
This service uses APIs that provide external services for the provision of functions linked to external services and for the acquisition and display of information.The APIs used may require presentation of the purpose of the use of functions, require users to consent to the terms and conditions of the service, or require presentation of the methods by which users can delete data.The use of information obtained via the service's APIs, the terms and conditions of use, and the method for deleting data are described below.
Instagram Basic Display API (scope: instagram_graph_user_profile, instagram_graph_user_media)
・We use your account connection and post data retrieval to provide the Instagram embed feature on Hatena Blog
・Not used for any purpose except for the Instagram embed feature on Hatena Blog
How to delete Meta Platform Data
・Access tokens to access the Instagram Basic Display API (Meta Platform Data) are stored on Hatena's server. If you want to delete the data, please perform the unlink operation of external services on Hatena Blog. Also, if you withdraw without unlinking, the data will be deleted within 60 days of withdrawal.
Added explanatory text and provisions on YouTube API in Hatena Bookmark to "(15) Regarding the use of information obtained through the API of external services".
Revised on December 13, 2023
Added provisions on Instagram Basic Display API to "(15) Use of information obtained via APIs of external services"
Revised on Jun 15, 2023
In conformance with the amendments to the Telecommunications Business Act, the clause entitled "(8)
Third-Party's Tracking Systems" was revised.
Revised on Apr 3, 2023
Due to the abolishment of advanced settings, related items in the privacy policy have been deleted.
Revised on Mar 31, 2022
Added a link to the company profile in (1)-1 due to the revision of Article 32 of the Act on the Protection
of Personal Information
Added more specific purposes of use to the section "(3) Use of Personal Information". Changed the section
"(4) Disclosure of Personal Information" to "(4) Disclosure and Provision of Personal Information", and
specified the various reasons for the provision of personal information to third parties as stipulated in
Article 23 of the existing law, as well as disclosure for other reasons.
Changed the address in "(12) Personal Information Manager" due to the relocation of the head office.
Revised on Mar 18, 2021
Added provisions on YouTube API to "(15) Use of information obtained via APIs of external services"
Revised on Feb 22, 2021
Added Specified suitable domains for the TRUSTe privacy program "(1) Basic Policy on Personal Information 2.
"
Due to the acquisition and utilization of individual identification numbers," (2) Acquisition of Personal
Information 3." have become obsolete
Added one provider of third party tracking systems.
Revised on Jan 7, 2021
Added one provider of third party tracking systems.
Revised on Sep 17, 2020
"name" described in "(2) Acquisition of Personal Information 5." has been changed to "Name (name of
corporate person in charge)"
With the end of Pocket Hatena, "Pocket Hatena Registration" included in "(5) Viewing, Editing, and Deleting
Personal Information" has been deleted.
Revised on Sep 11, 2020
Added Paragraph 3 in the “(8) Third Party Tracking Systems”
Added one provider of third party tracking systems
Revised on Nov 28, 2019
Added (15) Use of information obtained via APIs of external services
Revised on Sep 4, 2019
Moved the provisions related to the disclosure of personal information based on the Act on the Protection of
Personal Information from (13) to (5), and specified how it should be handled.
Changed the contact information due to relocation of Mobile Content Forum.
Revised on April 18, 2019
Added one provider of third party tracking systems.
Revised on Nov 13, 2018
Added one provider of third party tracking systems.
Revised on Sep 19, 2018
Due to the stoppage of the service the clause "8) Third Party Tracking System 2." was removed. Added
two provider of third party tracking systems. Added description on Do Not Track.
Revised on May 23, 2018
Added statement for users resident in EU Member States with the enforcement of the GDPR. Added
description and changed certain items due to becoming a covered business operator for personal information
protection organization.
Revised on Feb 21, 2018
Added one provider of third party tracking systems.
Revised on Jan 23, 2018
Added one provider of third party tracking systems.
Revised on Sep 29, 2017
Added one provider of third party tracking systems.
Revised on May 30, 2017
Following revisions to the Act on the Protection of Personal Information (Act No. 57), the Disclosure
Request method has been appended in (13). Following changes to service specifications, and the
discontinuation of service features, the Use of Personal Information Table has been updated.
Revised on February 13, 2017
Added one provider of third party tracking systems.
Revised on December 15, 2016
Added three providers of third party tracking systems.
Revised on July 28, 2016
(9) Toolbar and Firefox extension items have become obsolete Revision of the content regarding the
basic way of thinking of personal information in (1), as a result of (9) being obsolete Revision of the
description for obtaining personal information in (2), as a result of (9) being obsolete Revision of the
description of a third party’s tracking system in (8), as a result of (1) being revised
Revised on June 17, 2016
Added two providers of third party tracking systems.
Revised on May 20, 2016
Added one provider of third party tracking systems.
Revised on December 10, 2015
Added two providers of third party tracking systems. Changed the company name of the provider of third
party tracking systems. Changed the indication of TRUSTe.
Revised on September 1, 2015
Added one provider of third party tracking systems.
Revised on January 28, 2015
Added one provider of third party tracking systems.
Revised on December 4, 2014
Added one provider of third party tracking systems.
Revised on October 16, 2014
Added Paragraph 2 in the “(8) Third Party Tracking Systems”.
Revised on April 21, 2014
Added two providers of third party tracking systems. Indicated the providers of third party tracking
system by purpose of use.
Revised on July 3, 2013
Added provider of third party tracking systems.
Revised on May 31, 2013
Deleted the relevant items following the abolishment of DSi users. Changed the e-mail address of
support desk. Changed the Hatena’s Use of Personal Information Table into PDF file format.
Revised on April 19, 2013
Added provider and provision manner of third party tracking system. Changed the indication of TRUSTe.
Revised on January 7, 2013
Deleted one provider of third party tracking systems.
Revised on November 29, 2011
Added provider of third party tracking system.
Revised on July 28, 2011
Changed the company name of the provider of third party tracking systems.
Revised on June 8, 2011
Added provider of third party tracking systems.
Revised on September 2, 2010
Added provider of third party tracking systems.
Revised on May 13, 2010
Added the descriptions regarding the information automatically sent by the Toolbar and Hatena Bookmark
Firefox Extension.
Revised on December 14, 2009
Added the item regarding the third party’s email address to be registered by the Users In connection with
the additional functions of “Ugo Memo Theater/Ugo Memo Hatena”. Added the item regarding the third
party’s email address to be registered by the Users as these were also made by the invitation function of
“Hatena Haiku”.
Revised on September 3, 2009
Changed the name of the Hatena Toolbar. Corrected the misleading languages and spelling or consistency
of words. Changed the contact email address.
Revised on April 27, 2009
Added details of personal information to be acquired by NintendoDSi in connection with the additional
function of “Ugo Memo Theater/Ugo Memo Hatena”. In accordance with the instructions by TRUSTe, added the
description of the acquisition of an access log and also clarified that the personal information acquired
other than the prescribed manner will not be added to the personal information in “(2) Obtaining Personal
Information”.
Revised on April 2, 2009
Added details of the information acquired by Hatena Bookmark Firefox Extension.
Revised on January 26, 2009
Changed the items of personal information to be acquired at the User registration.
Revised on December 24, 2008
Added the terminal ID of Nintendo DSi as the item of the personal information to be acquired. Deleted
the item regarding the point redemption from the purpose of use of personal information in the Hatena’s Use of
Personal Information Table.
Revised on December 4, 2008
Added marketing research as the purpose of acquiring personal information.
Revised on September 29, 2008
Added individual identification number of the mobile device as the information to be acquired.
Revised on May 19, 2008
Changed the location of the personal information administrator.
Revised on January 24, 2008
Added the cookies’ acquisition purpose.
Revised on July 5, 2007
Changed the items of personal information to be acquired at the User registration. Added descriptions
regarding the Advanced Users. Added the cookies’ acquisition purpose. Reviewed the language and
redundant descriptions.
Revised on May 30, 2007
Added the examples of acquiring personal information. Cleary specified the means of viewing, changing
and deleting personal information. Added descriptions regarding the third party tracking
systems. Added descriptions of authorizing the use of the personal information upon the revision of the
Privacy Policy. Changed the URL of TRUSTe.
Revised on June 23, 2005
Added details of TRUSTe. Added details of the information acquired from the Toolbar. Added link to
the Hatena’s Use of Personal Information Table. Reviewed the language and redundant descriptions.
