UnknownGovernment IDFinancial accountPCIMedium

CornerStone Staffing Solutions, Inc.

bd_29de5dbb97b766ee · schema v1 · pii pii-v2

Severity

Medium

Discovered

—

Filed

Sep 12, 2026

To disclose

—

Affected

7state residents only

Linked

5 filings

Confidence

95%

Full breach record for CornerStone Staffing Solutions, Inc. →

Cornerstone Staffing Services, Inc. reported a data breach to the Vermont Attorney General. The breach was reported to the AGO on 2026-09-12. The reporting organization type is Other Commercial. 7 Vermont residents were affected. Categories of data breached: Social Security Numbers, Financial Account Codes, Credit and Debit Account Info.

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Leak gap clock✗ Leak >180d

⚠ no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.

Incident timeline — partial

? — ?

Breach window unknown

Sep 12, 2026

Filed

—

Corroborated · see linked filings

Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.

This filing is one of 5 about the same incident.View merged incident

A leak claim by qilin about this victim predates this filing by 302 days.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Siteqilinbd_ec840b7d9ffbec102025-11-13 · +303dVerified by operator

Regulatory filings (3) · sorted by filing gap

California State AGbd_e4dfd8c0234818a12026-09-11 · +1dVerified
Texas State AGbd_d3cf7d86357026862026-09-15 · +3dVerified by operator
Massachusetts State AGbd_22dd62acb7c5bd852026-09-01 · +11dVerified

Name: CornerStone Staffing Solutions, Inc.
norm: cornerstone staffing
Domain: cornerstone-staffing.com

Name: CornerStone Staffing Solutions, Inc.
norm: cornerstone staffing
Domain: cornerstone-staffing.com

Discovered: —
Materiality determined: —
Notification sent: —
Affected individuals: 7state-resident count only
Data types: Government IDFinancial account
Data elements: Social Security numberFinancial account numberPayment card number
Attack vector: Unknown
Threat actor: External

Compliance flags: Leak >180d
Discovery-date grounding: no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 4 filings · 4 states

View merged incident ↗

Massachusetts State AGSep 1 · first

California State AG+10d

Vermont State AG+11d · this page

Texas State AG+14d

Pattern: first filing Sep 1 (MA), last Sep 15 (TX) — a 14-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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://ago.vermont.gov/categories/security-breach-notices
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 12, 2026
Raw hash: e8ad0760ea0581ca3ba8ce469d491f2e2279ccec9f83d482384731c43078f1b4

Linked disclosures

Ransomware claims (1)

Regulatory filings (3) · sorted by filing gap

Reporting entityCornerStone Staffing Solutions, Inc.

Victim entityCornerStone Staffing Solutions, Inc.

IncidentUnknown

ComplianceLeak >180d

Extraction provenanceno artifact recorded

Source provenanceago.vermont.gov