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Simon Property Group

medusa

This record tracks a ransomware attack claimed by the medusa group against Simon Property Group. It collects the publicly disclosed attack details — sector, location and timeline — as published on the operator's leak site and indexed by Breach House.

Window Zero

EXPOSURE GAP

Window Zero is the time the breach stayed in the open before anyone said so — the gap between when the attack was first discovered on the operator's leak site (t1) and when it was publicly disclosed (t2). The wider this window, the longer victims, staff and customers were exposed with no warning.

231days open
t1 · Published t2 · Pending
Oct 28, 2025Not disclosed yet
Country
United States
Business Category
Retail / E-commerce
Employees
0-50
Discovered
2025-11-07
Published
October 28, 2025
Disclosed / Notified
Not disclosed yet
Victim ID
6R3rvf2vFtD8

Attack Summary

Simon Property Group is a leading real estate investment trust (REIT) based in Indianapolis, Indiana. Founded in 1993, it owns, develops, and manages premier shopping malls, outlets, and lifestyle centers across the United States and internationally. The company’s well-known properties include Premium Outlets and The Mills centers. Led by CEO David E. Simon, it focuses on creating high-quality retail and entertainment destinations that attract millions of visitors each year. Despite challenges from online retail, Simon Property Group continues to innovate by combining shopping, dining, and mixed-use spaces, maintaining its position as a global leader in retail real estate. company is headquartered in 225 West Washington Street, Indianapolis, Indiana 46204, USA. 3,000 employees

Leak Screenshots

SAMPLE

Proof-of-breach screenshots the operator posted from the stolen data. Previews are redacted and locked — the originals are available on HaveIBeenRansom.

file_tree.png
finance_2024.xlsx
passport_scan.jpg
contract_signed.pdf
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Dark Web Exposure

Findings for simon.com — indexed by HaveIBeenRansom.
1,605
found in Infostealer logs
2,470+
found in Traditional breaches
530+
found in Ransomware leaks
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+ 17 more leak sources locked
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