HackingFinancial ServicesFinanceVulnerability ExploitCapture Stored DataCL0PData ExfiltratedRansom DemandedSupply Chain (3P Vendor)TargetedIdentity (basic)Government IDFinancial accountMediumContained

Sound Community Bank

bd_778654f2c770ea95 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Jun 13, 2023

Filed

Jul 17, 2023

To disclose

5 weeks

Affected

33state residents only

Linked

24 records

Confidence

66%

Sound Community Bank notified Montana residents of a potential data breach involving a third-party vendor's MOVEit file transfer system. The CL0P ransomware group exploited a vulnerability in MOVEit to access data uploaded on April 3, 2023. Affected data included names, SSNs, account numbers, and DOBs. The vendor patched the system on May 31, 2023. Bank offered 24 months of credit monitoring.

J jump to incidentP pin to compareR raw source

Incident timeline

undetected · 71 days

discovery → filing · 5 weeks / 34 days

Apr 3, 2023

Begins

Jun 13, 2023

Discovered

Jul 17, 2023

Filed

vs. sector median

5 wks faster

This filing is one of 24 records about the same incident.View merged incident

Part of Progress Software Corporation supply-chain incident (2023) — a supply-chain cascade affecting multiple organizations.View cascade →

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

Massachusetts State AGbd_51d45a1a8a5e2f6d2023-09-19 · +64dVerified by operator
Massachusetts State AGbd_ec926ee5ee55bfe72023-09-19 · +64dVerified by operator
Montana State AGbd_9d135722f356e9262023-09-28 · +73dVerified
Oregon State AGbd_c13bfda88a3242d42023-10-04 · +79dVerified

Show 6 more filings ↓up to 126d gap

California State AGbd_c92fcc25ac8a7c682023-10-04 · +79dVerified
Massachusetts State AGbd_d77a46d0383bceaa2023-10-04 · +79dVerified by operator
Massachusetts State AGbd_a9a8d5c26793cdfc2023-10-06 · +81dVerified by operator
California State AGbd_7d8643b052109cd42023-11-09 · +115dVerified by operator
Massachusetts State AGbd_e1c74fd96247ece32023-11-09 · +115dVerified by operator
Massachusetts State AGbd_c89fcdf92f5fe80d2023-11-20 · +126dVerified by operator

Showing first 10 of 23 linked disclosures.

Name: Sound Community Bank
norm: sound community bank
Domain: fisglobal.com

Name: Sound Community Bank
norm: sound community bank
Domain: fisglobal.com
Industry: Financial Servicesllm

Discovered: Jun 13, 2023
Breach occurred: Apr 3, 2023 – May 31, 2023
Undetected for: 71 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jun 13, 2023
Affected individuals: 33state-resident count only
Data types: Identity (basic)Government IDFinancial account
Data elements: Social Security numberDate of birth
Attack vector: Third-Party / Supply Chain· CL0P
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1041 Exfiltration Over C2 ChannelT1486 Data Encrypted for Impact
Threat actor: CL0PExternalFinancial
Regulator citations: CISA and FBI published a joint Cybersecurity Advisory regarding the vulnerability
Initial access: exploit_public_facing

During the incident: Vendor disabled the MOVEit transfer tool on May 31, 2023
Vendor implemented a software patch to remediate the issue
Offering complimentary 24-month membership to OnAlert from ChexSystems
Changes made: Implemented a software patch to remediate the issue
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 5 weeks(34 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 11 filings · 4 states

View merged incident ↗

Montana State AGJul 17 · first · this page

Massachusetts State AG+64d

Montana State AG+73d

Oregon State AG+79d

California State AG+79d

Massachusetts State AG+79d

Massachusetts State AG+81d

California State AG+115d

Massachusetts State AG+115d

Massachusetts State AG+126d

Pattern: first filing Jul 17 (MT), last Nov 20 (MA) — a 126-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Cascade drawn from the first 10 linked disclosures of 23 — the full spread may be wider.

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filingThis record

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

Source URL: https://dojmt.gov/wp-content/uploads/OCP/Consumer-notification-letter-437.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 17, 2023
Raw hash: 1643e1e48d9f5d7d57b4fc9daa0e3eacab38dc5971a5a22c874f653e0408b4a4

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entitySound Community Bank

Victim entitySound Community Bank

Incidentdiscovered Jun 13, 2023

Stated responseVendor disabled the MOVEit transfer tool on May 31, 2023

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov