Framework for Data Protection

Here, please find the details of our framework for protecting the privacy of our customers.

Advisory Board for Privacy

Yahoo! JAPAN has established an Advisory Board for Privacy comprised of experts in order to check Yahoo! JAPAN's handling of privacy from a third-party perspective, and regularly receives valuable opinions from the Board.


Information security measures

Yahoo! JAPAN, a company of the Z Holdings Group, conducts information security measures to continue providing services that can be used safely and securely to our customers. For details, please refer to "Privacy and Security" of Z Holdings Corporation.


Measures against unauthorized acts

Yahoo! JAPAN monitors and analyzes unauthorized activities and conducts countermeasures, etc. for our customers and partners.


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For these countermeasures, we gather and use various personal data acquired from browsers and apps, and may provide these data to third parties for measures against unauthorized acts.

For this purpose, personal data is provided not only to our partners, but also to law enforcement authorities. When providing personal data to third parties for the purpose of countermeasures against unauthorized acts, we restrict the use purpose in our contracts and endeavor to conduct technical measures so that the provided personal data will not be used for purposes other than the measures against unauthorized activities.

To protect yourself from ID thefts

Customers may suffer losses when a criminal abuses their Yahoo! JAPAN ID. In order to protect Yahoo! JAPAN ID and passwords of our customers from abuses, Yahoo! JAPAN introduces security measures that can be undertaken immediately. For details, please refer to "Yahoo! JAPAN ID Guide (Japanese only)".


Safety of data pathways

Yahoo! JAPAN encrypts the communication pathway between Yahoo! JAPAN and our customers using a robust structure in order to prevent third parties from stealing and altering Customer Data.


Safe storage of data

It goes without saying that Yahoo! JAPAN safely stores data, but when the management of data is outsourced to other companies, Yahoo! JAPAN conducts periodic tests on strict items to check if organizational/physical security measures, etc. are conducted in these companies.


Strict management of personal information

Access authorities to our Customer Data are restricted to minimum possible in our system. In addition, our Customer Data is stored in a heavily protected physical location, and there is a structure in place so that only limited persons can handle such data.


Framework to protect data

In order to protect our Customer Data, we have appointed a Chief Information Security Officer (CISO), Chief Data Officer (CDO) and a Data Protection Officer (DPO).


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CISO (Chief Information Security Officer)

In order to promote the security measures mentioned above, we have appointed a CISO and persons responsible for information security for each organization. We make sure to thoroughly conduct organizational measures to protect our Customer Data in all scenes.

CDO (Chief Data Officer)

From fiscal 2017, we have appointed a CDO and persons responsible for data in each service in order to promote the use of data while observing laws and regulations and giving consideration to privacy.

DPO (Data Protection Officer)

In May 2020, we have newly appointed a DPO for the purpose of promoting the appropriate use of data. To meet this purpose, the DPO gives advice on the protection of Customer Data handled by Yahoo! JAPAN from an objective and neutral standpoint and monitors usage.

We ensure strict management of data so that our customers can use our services safely and comfortably.