Tri Counties Bank
bd_8a1c05db9a0376c6 · schema v1 · pii pii-v1
Full breach record for Tri Counties Bank →Threat-actor claim — not a regulatory filing
This row is a claim by the ransomware group Black Basta 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
Tri Counties Bank provides a unique brand of Service With Solutions® offering a breadth of personal, small business and commercial banking services to communities throughout California.Established in 1975 and with assets of $10 billion, Tri Counties Bank is a wholly-owned subsidiary of TriCo Bancshares (NASDAQ:TCBK) headquartered in Chico, California.In addition to an extensive California branch network, Tri Counties Bank provides convenient access to its products and services with locations throughout California, advanced online and mobile banking, and a nationwide network of over 37,000 surcharge-free ATMs.SITE: www.tcbk.com Address 63 Constitution Dr, ChicoCalifornia, 95973United States
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Incident timeline — mostly unverified
? — ?
Breach window unknown
Mar 19, 2023
Claim posted
—
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?Regulatory filings (10) · sorted by filing gap
- Maine State AGbd_201ae7fa1e3c8a632023-10-12 · +206dVerified by operator
- Montana State AGbd_3f1547cf3ba03ec12023-10-12 · +206dVerified by operator
- Indiana State AGbd_459843a2f6e73e1c2023-10-12 · +206dVerified
- Massachusetts State AGbd_c631857751f1f3bd2023-10-12 · +206dVerified by operator
Show 6 more filings ↓Show fewer ↑up to 247d gap
- California State AGbd_f2b2a26ac629eb7b2023-10-12 · +206dCandidate
- SEC 8-Kbd_1297d2dd698bf7122023-10-13 · +207dCandidate
- Maine State AGbd_0119439d398a4f922023-11-22 · +247dVerified
- New Hampshire State AGbd_3d1dd695dbfc9eb92023-11-22 · +247dVerified by operator
- California State AGbd_9d8a5b82fc79f5002023-11-22 · +247dVerified by operator
- Vermont State AGbd_af220720d4d002912023-11-22 · +247dVerified by operator
Filing propagation · 11 filings · 7 states
View merged incident ↗Pattern: first filing Mar 19, last Nov 22 (VT) — a 247-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.