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Japan - Data Protection Overview

November 2023

1. Governing Texts

Japan's data protection laws were substantially revised in 2015 and further revised in 2022, with separate data protection laws governing and expanding the scope of the data protection to government and administrative agencies having entered into effect in 2022 and 2023. Data protection is one of the most active areas of law and is constantly evolving as the scope of personal information disclosed by individuals in day-to-day transactions expands and use by businesses becomes more widespread as the digital society and services develop. The revised laws impose wider obligations on data transfers, in particular to offshore entities, and on the handling of data breaches.

1.1. Key acts, regulations, directives, bills

1.2. Guidelines

Key guidelines provided by the Personal Information Protection Commission ('PPC'), the regulatory body established pursuant to the APPI is responsible for overseeing compliance with the APPI, and relevant ministries are listed below. Some of these guidelines are subject to 'Q&As' or 'commentaries' which supplement the guidelines with practical guidance. The APPI delegates the power to require reports from Personal Information Controllers ('PICs') (as defined in the section on key definitions below) to the minister regulating each business sector or designated minister, etc. As such, each ministry provides, jointly with the PPC or individually, guideline(s), Q&As, and commentaries with regard to the relevant business sector.

Guidelines issued by the PPC (only available in Japanese here) provide detailed guidance on the scope and meaning of the provisions of, and certain terms used in the APPI, and examples of their application, though the examples do not expand or limit the scope of the APPI. The guidelines also make it clear that a breach of a guideline that is expressed as an obligation, rather than a recommendation, would be deemed a breach of the APPI.

The following guidelines on the APPI, issued by the PPC, include:

Note that the above-listed are not intended to be comprehensive, additional guidelines have been issued for businesses and industries where there is a need for more stringent protection of personal information.

In particular, the PPC has issued the following additional guidance:

Financial sector

For credit card businesses and businesses that use genetic information, the Ministry of Economy, Trade, and Industry ('METI') has issued the following guidance:

For the financial sector (except the credit card industry, which is regulated by METI), the Financial Services Agency ('FSA') has issued the following guidance:

The Ministry of Justice has issued the following guidance:

Medical sector

For the medical sector, the Ministry of Health, Labour, and Welfare ('MHLW') has issued the following guidance:

Employment sector

For employment and welfare areas, the MHLW has issued the following guidance:

Telecommunications sector

For the telecommunication sector, the Ministry of Internal Affairs and Comminutions ('MIC') has issued the following guidance:

1.3. Case law

Benesse Leakage Incident

Benesse Holdings, Inc., a correspondence education service provider, disclosed that it had suffered a leakage affecting approximately 49 million customers consisting of children and their parents' personal data, such data included names, addresses, phone numbers, the children's genders and dates of birth, as well as expected baby delivery dates of a limited number of expecting mothers (though it did not include credit card information, bank account information, or children's achievement information).

In 2013 and 2014 an employee of a company subcontracted by Benesse's subsidiary ('the Subsidiary') to process its customers' data and engage in the data processing work through the Subsidiary's client PC, the employee proceeded to unlawfully download the data onto his personal smartphone. The data was sold by him to name-list brokers and were ultimately obtained by other service providers, who sent direct marketing mails to the affected parents and children. The Subsidiary had implemented security measures, but the systems to send alerts to senior managers regarding unusual data transfer activity and control the exporting of data from the client PC onto external devices were not effective. As a gesture of apology, Benesse sent a JPY 500 (approx. $3) shopping voucher to each customer it identified as affected by the incident.

The following cases of individual or collective damages claim actions against Benesse on this incident are publicly available:

Supreme Court Judgment of October 23, 2017

The Supreme Court of Japan's judgment of October 23, 2017, overturned the lower court's (Osaka High Court) judgment that the plaintiff should have established damages beyond a mere feeling of discomfort or anxiety. It instead found the plaintiff's privacy was infringed and remanded the case to the lower court to further review of what the moral damage due to the privacy infringement was.

Tokyo District Court Judgment of June 20, 2018

The Tokyo District Court ('TDC') judgment of June 20, 2018, found that:

However, the TDC also found, taking into account the type of leaked data, such data only being available to certain parties and not in the public domain (e.g. the internet) in general, and Benesse's provision of JPY 500 (approx. $3) in shopping vouchers, that the emotional distress sustained by the plaintiffs was still not enough to establish a 'pain and suffering' award, and accordingly dismissed the collective damages claims against both Benesse and the Subsidiary. The judgment was appealed to the Tokyo High Court ('THC').

TDC Judgment of December 27, 2018

The TDC judgment of December 27, 2018, found that the Subsidiary could not have reasonably expected that its controls against data exports would not work against data exports to new Android smartphones using MTP and therefore was not in breach of its duty of care in not upgrading those controls to block data exports to such new models of smartphones. However, the TDC found that the Subsidiary was subject to the statutory 'Employer's Tort Liability,' which does not require a breach of duty of care but is based on the individual's tortious act and the defendant's supervision and control over the individual. Therefore, the TDC awarded damages against the Subsidiary of JPY 3,000 (approx. €21 at the then JPY-€ rate) for pain and suffering plus JPY 300 (approx. $2) as lawyers' costs per plaintiff. The TDC found that Benesse could also not have reasonably expected that the export controls would not work against data exports to new Android smartphones using MTP and therefore was not in breach of its duty of care in not requiring the Subsidiary to upgrade the export controls. As 'Employer's Tort Liability' also did not apply because Benesse was not in a position to supervise and control the tortfeasor individual, the TDC dismissed the damages claims against Benesse. The plaintiffs were reported to have appealed to the THC.

THC Judgments of March 25, 2020

The THC judgments of March 25, 2020, on the appeals of the two TDC judgments above found that the Subsidiary could have reasonably expected that its controls against data exports would not work against data exports to new Android smartphones using MTP and thus breached its duty of care by failing to control data exports to new model smartphones, Benesse breached its duty of care by failing to supervise the Subsidiary, and accordingly the Subsidiary and Benesse were liable as joint tortfeasors for damages of JPY 3,300 (approx. $22 at the then JPY-€ rate) plus 5% late charges per annum per affected individual.

2. Scope of Application

2.1. Personal scope

The APPI applies to every PIC in Japan, whether a person or entity; though the General Guidelines relax the standards of security measures for 'small or medium-sized business operators' (see the section on principles below).

The APPI only applies to persons or entities that handle personal information in the course of their business. For this purpose, a 'business' means activities that can be conducted repeatedly for a particular purpose and are regarded as a business under social conventions; a business can be for profit or not. A broadcasting institution, newspaper publisher or other press organizations, professional writer, university, or other academic organization, religious body, or political party are exempted from the obligations under the APPI in connection with such press, professional writing, academic, and political activities respectively.

2.2. Territorial scope

An offshore PIC that is not otherwise subject to the APPI regime but acquires personal information of data subjects in Japan for the purpose of supplying goods or services to any customer in Japan (whether they are a data subject or not and including a corporate customer if both the corporate customer and the data subject are in Japan) will be subject to the APPI if it handles that personal information, or any anonymized information created from it, in a foreign country. An offshore data processor engaged by a PIC in Japan is now also subject to the APPI if handling information on a data subject in Japan for the PIC as its customer.

The APPI amendments implemented on April 1, 2023, clarified that the PPC can render not only advice to but also order against a PIC based overseas, having set certain administrative procedural details for international delivery of written notices of any such advice or order (or effecting a deemed delivery if the location of an offshore PIC is not known to the authority). The PPC may also provide information to foreign regulatory authorities for their own regulatory enforcement purposes.

2.3. Material scope

The APPI applies to the 'handling' of personal information by a PIC. 'Handling' is not defined in the APPI or the PPC's guidelines. However, it was explained in published discussions made at the Government of Japan's ('Government') committee regarding the outline of the original APPI in 2000 to mean collection (acquisition), retention, use, transfer, and any other acts of handling personal information. 'Processing' was also explained at the discussions to include any such acts. The terms are understood in practice to be given such meanings.

For further information regarding the scope of the application of the law, see the section on personal scope above.

3. Data Protection Authority | Regulatory Authority

3.1. Main regulator for data protection

The PPC is the primary regulator under the APPI and the My Number Act.

3.2. Main powers, duties and responsibilities

As regards the PPC's exercise of its investigatory and other powers: