SHINDO3

Nara Women's University

Spam emails sent178,782records

NO LEAK FOUNDEmail addressMisconfiguration · Closed (final report)

Open in the live monitor ▶
Disclosed
Mar 30, 2026
Leak
No leak
Type
Misconfiguration
Status
Closed (final report)
Security spend
Not checked yet
Compensation
Not announced

What leaked

ContactSome faculty email addresses (involved in the spam)

Not leaked

  • No leak of personal or internal data; the student mail system was not affected

How many

  • Spam emails sent 178,782 records

Who is affected

  • Some faculty

Cause

SMTP authentication and relay settings allowed unauthorized sending from outside

Timeline

  1. Intrusion began
  2. Intrusion stopped
  3. First disclosure

Response

  • Config review
  • More monitoring
  • New detection

Fixed SMTP authentication and relay settings; added sending-log monitoring and early detection of abnormal sending

What you should do

  1. Don't open links in emails from this company. The apology email itself may be fake
  2. Expect targeted phishing posing as HR or interview contacts
  3. Check the company's notice to see if you're affected

Lessons for companies

  1. Two-person review and pre-release tests for sharing and cache changes; monitor cloud config (CSPM)
  2. Report to the PPC: preliminary in 3–5 days, final in 30 (60 if malicious)
  3. Run red teaming and AI-assisted hardening, and publish how much you invest

Sources