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JAENES
APossible leakOctober 19, 2026 announced

長崎市（長崎満喫!アウェイ遠征応援キャンペーン）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
Unconfirmed
Announced on
October 19, 2026
Severity
AFinancial and HR records — information that easily translates into monetary damage.
Scale
19 people
Main impact
According to news reports, 長崎市's campaign site may have leaked 22 inquiries and personal data for 19 people (names, email addresses, and inquiry contents); the city removed the inquiry form and has notified the affected individuals.
Information involved
Email addressFull name
Cause / key point
The cause is under investigation.
Industry
Government & municipal
Listing / capital
Government / public body
Sources
Last updated
October 20, 2026
Email addressFull nameHow 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: Under investigation / not stated(Cause not disclosed)

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