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JAENES
APossible leakSeptember 14, 2026 announced

生命保険協会（契約照会）Data breach / unauthorized access incident

笹尾 祐太朗の写真Reviewed by Yutaro SasaoWritten by Leak Watch editorial team published ・ updated
Occurred on
July 1, 2021
Announced on
September 14, 2026
Severity
AFinancial and HR records — information that easily translates into monetary damage.
Scale
27,407 people
Main impact
It was reported that the names, addresses, dates of birth, and contact details of 27,407 people were viewable. Insurance contract details and death certificates were excluded.
Information involved
Email addressPhone numberHome addressFull nameDate of birth
Cause / key point
A configuration error that mistakenly granted view permissions to guest users.
Industry
Finance & insurance
Listing / capital
Non-profit corporation

Industry association

Sources
Last updated
October 20, 2026
Email addressPhone numberHome addressFull nameDate of birthHow severity is assessed →

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Written & reviewed

笹尾 祐太朗の写真

Reviewed byYutaro SasaoFounder & CEO, MediaLeap Inc.

CEO of MediaLeap Inc. Working on both sides of web advertising and web media since 2013; founded the company in May 2025.

Review scope: cross-checking against primary sources (official and government announcements), verifying claims stay within the facts, and checking source attribution。Last reviewed:

Written by:Leak Watch editorial team (AI-assisted drafts verified against sources by the editorial team) · Reviewer profile · Request a correction

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Attack method classification: Misconfiguration & access-control gaps(Data left readable by anyone)

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