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JAENES
BPossible leakOctober 6, 2026 announced

気象キャスターネットワーク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 6, 2026
Severity
BIncidents centered on names and contact details.
Scale
15,959 records
Main impact
Up to 15,959 records of names, email addresses, etc. may have been exposed; some may include addresses and telephone numbers. The affected data were obtained through membership registration, event applications, and inquiries.
Information involved
Email addressPhone numberHome addressFull name
Cause / key point
Unauthorized access to and tampering of the website.
Industry
IT & telecom
Listing / capital
Unlisted
Sources
Last updated
October 20, 2026
Email addressPhone numberHome addressFull nameHow severity is assessed →

Is this incident worth paying attention to?

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: Unauthorized access (method undisclosed)(Breached, but the technique was not identified or disclosed)

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