City of Mitchell
bd_256e9f230cf1ef2a · schema v1 · pii pii-v2
Full breach record for City of Mitchell →Threat-actor claim — not a regulatory filing
This row is a claim by the ransomware group Storm 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
Mitchell is a city in and the county seat of Davison County, South Dakota, United States. Mitchell is the principal city of the Mitchell Micropolitan Statistical Area, which includes all of Davison and Hanson counties. The company headquarters is located in 612 N Main Street, Mitchell, SD 57301, United States. 51-200 Employees
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Incident timeline — mostly unverified
? — ?
Breach window unknown
Aug 23, 2026
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.