SHINDO2

Cosmos Initiatives Co., Ltd.

Business partners82organizations

POSSIBLE LEAKPostal address / Phone numberAccount takeover · Closed (final report)

Open in the live monitor ▶
Disclosed
Mar 17, 2026
Leak
Leak possible
Type
Account takeover
Status
Closed (final report)
Security spend
Not checked yet
Compensation
Not announced

What leaked

Business dataCompany name
ContactAddress, Phone number, Email address
Communications & contentContent of emails sent from the account

How many

  • Business partners 82 organizations

Who is affected

  • Business partners

Cause

A third party accessed a specific email account and had used it to send spam

Timeline

  1. Spam sent once
  2. Dozens of spam emails in August and September 2025
  3. First disclosure

What you should do

  1. Don't open links in emails from this company. The apology email itself may be fake
  2. Treat refund or apology calls and texts as scams. Call back only on the number from the official site
  3. Watch for unexpected mail or invoices; your address is hard to change
  4. Check the company's notice to see if you're affected

Lessons for companies

  1. Report to the PPC: preliminary in 3–5 days, final in 30 (60 if malicious)
  2. Run red teaming and AI-assisted hardening, and publish how much you invest

Sources