Nippon Rent-A-CarApp

2LowPossibleAnnounced Updated

Unauthorized access may have exposed emails, IDs, usage history and, for some members, driver license details and card last-4 digits. Two announcements covered 41 and 55 people by different methods.

This incident was imported from a dataset that compiles public announcements, and we are still checking it against the sources. Counts and causes will be updated after the check. Sources are in Japanese.

Cause
Unauthorized access
Occurred
2026-09-19 – 2026-09-21
Sector
Transport & logistics
Operational impact
None

Data involved

DataStatusCountGroupEvidence
Email addressPossible leakNot disclosed—Source(opens in a new tab)
User or member IDPossible leakNot disclosed—Source(opens in a new tab)
ID documentsPossible leakNot disclosed—Source(opens in a new tab)
Payment detailsPossible leakNot disclosed—Source(opens in a new tab)
NamePossible leakNot disclosed—Source(opens in a new tab)
Phone numberPossible leakNot disclosed—Source(opens in a new tab)
Postal addressPossible leakNot disclosed—Source(opens in a new tab)
Date of birthPossible leakNot disclosed—Source(opens in a new tab)

Counts are the figures the organization announced. Because the same person may be counted more than once, we do not add the rows together.

What users should do

  • Check your card statements
  • Watch for emails and texts pretending to be the company

General steps based on the type of data involved. Check the organization’s notice or help line to see whether you are affected.

Tools for this kind of attack

Picked from the cause of the incident: tools that help you check your own systems for the same kind of weakness, or spot the warning signs.

Vuls

Impact Reaches others
future-architect/vuls

An agentless vulnerability scanner that checks the packages installed on a server and lists the ones affected by known CVEs.

Purpose
Defense
Type
Command line
Difficulty
Intermediate
License
CopyleftGPL-3.0
Category
Vulnerability scanning
Actively updatedstars12,302Last update 2026-10-21
Read the Vuls review

Wazuh

Impact Local only
wazuh/wazuh

A free security platform (SIEM/XDR) that collects logs, configuration, and vulnerability data from agents on your endpoints and shows it all in one dashboard.

Purpose
Defense
Type
Self-hosted server
Difficulty
Advanced
License
CopyleftGPL-2.0(一部の構成要素は Apache-2.0)
Category
Vulnerability scanning / Forensics
Actively updatedstars17,410Last update 2026-10-24
Read the Wazuh review

Suricata

Impact Reaches others
OISF/suricata

An intrusion detection and prevention engine (IDS/IPS) that matches network traffic against rules and records suspicious activity as alerts.

Purpose
Defense
Type
Self-hosted server
Difficulty
Intermediate
License
CopyleftGPL-2.0
Category
Network
Actively updatedstars6,773Last update 2026-10-23
Read the Suricata review

Sources

  1. ニッポンレンタカー:会員情報漏えいに関するお知らせ(9月26日公表)www.nipponrentacar.co.jp · Published 2026-09-26(opens in a new tab)
  2. ニッポンレンタカー:別手法の不正アクセス(9月29日判明分)www.nipponrentacar.co.jp · Published 2026-10-01(opens in a new tab)