City of Columbus, Ohio
bd_1840a5188defe068 · schema v1 · pii pii-v1
Full breach record for City of Columbus, Ohio →Threat-actor claim — not a regulatory filing
This row is a claim by the ransomware group Rhysida 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
City of Columbus, Ohio
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Incident timeline — mostly unverified
? — ?
Breach window unknown
Jul 31, 2024
Claim posted
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Corroborated · see linked filings
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
Linked disclosures
Why this link?Ransomware claims (1)
- Leak Siterhysidabd_c07df1e00674c1622024-07-18 · +13dVerified
Regulatory filings (4) · sorted by filing gap
- Montana State AGbd_a6d1d5c3250831742024-09-05 · +36dVerified
- Indiana State AGbd_311cc9cd07f61dfb2024-10-07 · +68dVerified
- Maine State AGbd_ab0fca3ff7bb9fa02024-11-01 · +93dVerified
- Massachusetts State AGbd_cd6c46bfac4a64292024-11-01 · +93dVerified by operator
Filing propagation · 5 filings · 4 states
View merged incident ↗Pattern: first filing Jul 31, last Nov 1 (MA) — a 93-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?
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.
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.
rhysida
According to ransomware.live, Rhysida is a ransomware-as-a-service (RAAS) group that emerged in May 2023. The group utilizes a namesake ransomware through phishing attacks and Cobalt Strike to breach the targets' networks and deploy their payloads. The group threatens to publicly distribute exfiltrated data if the ransom is not paid, and it's worth mentioning that Rhysida is still in the early stages of development. The ransomware leaves PDF notes in the affected folders, instructing victims to contact the group through its portal, and payment is made via Bitcoin. After encryption, the ransomware appends the extension '.ryshida' to encrypted files. Source: https://github.com/crocodyli/ThreatActors-TTPs