Simon Property Group
bd_35f1ad87caf9e9de · schema v1 · pii pii-v1
Full breach record for Simon Property Group →3 incidents on fileThreat-actor claim — not a regulatory filing
This row is a claim by the ransomware group Medusa on its public extortion blog. It has not been validated by the victim or any regulator. Treat attribution and counts as the threat actor's assertion until a regulatory filing or victim disclosure corroborates them.
Source: Ransomware.live
Post text · scraped from the leak site
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
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Incident timeline — mostly unverified
? — ?
Breach window unknown
Oct 28, 2025
Claim posted
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No filing yet · watching
Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.
Claim → filing
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Compliance clock
Not assessable
Evidence ladder
Attacker assertion only. Establishes: claim date, group, alleged victim.
Unlocks: incident narrative, operational impact. Still no compliance clock.
Unlocks: discovery date, data types, affected count, compliance clock.
Unlocks: materiality, stated response, full audit trail. Ceiling removed.
No regulatory filing corroborates this yet — it is the attacker's own assertion. Watch this entity to be notified the moment a filing corroborates or contradicts it.
Source ceiling
- actor name
- victim claim
- ransom/leak status
- discovery date
- materiality
- notification
- affected count
- confirmed data types
- compliance clock
The ✕ fields stay blank until a regulatory filing or victim disclosure lands.
medusa
According to ransomware.live, Medusa is a ransomware-as-a-service operation active since June 2021 that has targeted over 300 victims across critical infrastructure sectors including healthcare, education, legal, and manufacturing using double-extortion, with attacks surging 42% between 2023 and 2024 and a formal CISA advisory issued in early 2025.