2022.08.02 Other

[Important] Notice that the online diagnostic results system has resumed

Thank you for your visiting our clinic and your continuous support.
The online diagnostic results of the annual checkups and comprehensive health screening of our clinic group (Tokyo Midtown Clinic, Nihonbashi Muromachi Mitsui Tower Midtown Clinic) was temporarily unavailable to view.
The Security Department of a third party web performance company did a vulnerability test in which our system's safety has been confirmed. Therefore, we have resumed our online diagnostic results system.

1.Final report *As of Aug 1, 2022
  • ●Event
    Vulnerability was found in which an annual checkup or comprehensive screening client may access another client's results in certain conditions after logging in.
  • ●Number of access
    Total of 13 accesses by 2 checkup clients
    *No viewing with a fraudulent purpose has been confirmed.
  • ●Duration that access was available.
    Since the service started in July, 2021 to July 4, 2022.
    *The vulnerability test was researched for all of the data for this duration.
  • ●Categories that were accessible
    Name, DOB, gender, address, checkup results
  • ●Possibility of secondary damage
    There has been no unauthorized usage confirmed so far.
2.Notification to the web system users

We have contacted all clients whose personal information might have been accessed.


On July 4th when the vulnerability was found, the system was immediately halted. Thereafter we received technical evaluation and improvement strategies for security measures by a third party web performance company.
On August 2nd the system was resumed since we took procedures against the vulnerability and received safety verification.
Currently, the system is functioning properly.

We apologize for any inconvenience, and thank you for your understanding and cooperation. We will strive to prevent recurrence.

Toshiomi Kusano, M.D., PhD.
Tokyo Midtown Clinic

[Please contact the following for any inquiries]

TEL: 03-6366-1404 (MON-FRI: 9 am to 5 pm)

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