SLeak confirmedNovember 7, 2026 announced

使えるねっと（使えるポータル）Data breach / unauthorized access incident

Reviewed by Yutaro SasaoWritten by Leak Watch editorial teamNovember 7, 2026 published ・ November 9, 2026 updated

Occurred on: November 6, 2026
Announced on: November 7, 2026
Severity: SCompromise of deep personal data or usable credentials.
Scale: Unknown
Main impact: A leak of customer information managed in usable portals was confirmed, and on the shared server backup restoration caused loss of web data and sent/received emails updated after 11月2日. On the VPS, 127 records related to hosted machines are under investigation, but the actual number of leaked records is unknown.
Information involved: Email addressPasswordFull name
Cause / key point: Unauthorized access by a third party that viewed and obtained customer information and performed server operations.
Industry: IT & telecom
Listing / capital: Unlisted
Sources: 使えるねっと（公式発表）2026-11-07
Cybersecurity JP（記事）
Last updated: November 9, 2026

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Written & reviewed

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: November 9, 2026

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