MARRIOTT INTERNATIONAL, INC.
bd_bb64fc09252be08f · schema v1 · pii pii-v1
Full breach record for MARRIOTT INTERNATIONAL, INC. →9 incidents on fileThreat-actor claim — not a regulatory filing
This row is a claim by the ransomware group Shinyhunters 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
Marriott International is a renowned multinational hospitality company, headquartered in Maryland, USA. Founded in 1927, it operates a broad portfolio of hotels and related lodging facilities globally. Offerings include diverse properties from luxury to economy chain brands. As of today, Marriott has more than 7,000 properties in over 130 countries and territories, making it one of the world's largest hotel companies.
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Incident timeline — mostly unverified
? — ?
Breach window unknown
Aug 17, 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.
shinyhunters
According to ransomware.live, ShinyHunters is a financially motivated data-theft and extortion group active since 2020, responsible for high-profile breaches including Ticketmaster (via Snowflake) and PowerSchool; by 2025 they launched a RaaS offering called "shinysp1d3r," and in August 2025 French authorities arrested four members.