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JAENES
BPartial leak confirmedOctober 22, 2026 announced

ネットプロテクションズ（NP後払い）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
October 14, 2026
Announced on
October 22, 2026
Severity
BIncidents centered on names and contact details.
Scale
28,884 records
Main impact
Unauthorized access to the invoice reissue system confirmed access to some customers' personal information; 28,884 partial transactions were reported affected.
Information involved
Full nameHome address
Cause / key point
Unauthorized access caused by mechanical, continuous requests from a third party using methods not normally anticipated.
Industry
Finance & insurance
Sources
Last updated
October 23, 2026
Full nameHome addressHow 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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