FOR COMPANIES
Personal data and data breaches
From the first hours after a breach to everyday compliance. Some steps have deadlines.
Yusuke Abe, attorney
Admitted in Japan and New York · English & Japanese
- You had, or may have had, a data breach in Japan
- You need to know whether to report or notify
- You transfer personal data in or out of Japan
JAPANESE LAW
Three things to know
- 01
Report and notify
Breaches involving sensitive data or more than 1,000 people, among others, must be reported to the PPC and notified to individuals.
APPI Art. 26; Enforcement Rules Art. 7
- 02
Two-stage reporting
A prompt preliminary report, then a final report within 30 days (60 days if caused with an unauthorized purpose).
APPI Enforcement Rules Art. 8
- 03
Consent to share
Giving personal data to a third party generally requires the individual’s consent.
APPI Art. 27(1)
General information as of November 2026. Your situation may differ — please ask us.
HOW WE HELP
What we can do
- Breach response, reports and notices
- Privacy policies and cookie consent
- Outsourcing and cross-border transfer contracts
- Preparing for the APPI amendment
Yusuke Abe
Representative attorney
- Admitted in Japan (2018) and New York (2024)
- Anderson Mori & Tomotsune; Anderson Mori & Tomotsune (Thailand)
- LL.M., Fordham University · Marshall Suzuki Law Group, San Francisco
- Fundamentals of M&A Practice, 3rd ed. (Shojihomu, 2025)
HOW IT WORKS
Three steps
- 01
Book a time
Pick a slot online, or send a short note through the form.
- 02
30 minutes, free
Online or in Otemachi, Tokyo — in English. No need to be in Japan.
- 03
Written estimate first
Approach and fees in writing. We start only once you agree.
FAQ
Quick answers
Do we need to report a suspected breach?
Reporting can be required where a breach is likely, not only confirmed. Talk to us while you are still assessing.
Can you work with our head office abroad?
Yes. We explain Japanese requirements to your global team in English.
Can you draft the reports in Japanese?
Yes. We prepare the Japanese filings and notices.
CONTACT
Tell us what is happening
The first 30 minutes are free — in Japanese or English, online or in person.
Book a free consultation