AccidentalEducationEducationMisconfigurationEmployee Data InvolvedTargetedPIIIdentity (basic)Government IDFinancialMediumContained

Grinnell College

bd_102f4406b112fe68 · schema v1 · pii pii-v1

Severity

Medium

Discovered

May 7, 2023

Filed

Sep 29, 2023

To disclose

21 weeks

Affected

2state residents only

Linked

6 filings

Confidence

66%

Full breach record for Grinnell College →4 incidents on file

Grinnell College disclosed that on March 13, 2023, an employee inadvertently moved payroll files to a shared internal folder accessible by any user with valid credentials. The files were accessed by a limited number of users between May 4 and May 7, 2023. The files contained names, addresses, SSNs, salary, and tax info. No external access or misuse was detected. The incident was remediated on May 7, 2023, and credit monitoring was offered.

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Incident timeline

undetected · 55 days

discovery → filing · 21 weeks / 145 days

Mar 13, 2023

Begins

May 7, 2023

Discovered

Sep 29, 2023

Filed

vs. sector median

+12 wks slower

This filing is one of 6 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (5) · sorted by filing gap

Massachusetts State AGbd_30ca495fdec57c762023-09-29Verified
Vermont State AGbd_4f206279985405352023-09-29Verified
Maine State AGbd_5102201eb428ab792023-09-29Verified
Indiana State AGbd_73b7d505c0235ae42023-09-29Verified

Show 1 more filing ↓up to 3d gap

New Hampshire State AGbd_9ed8c50a1b6280cb2023-10-02 · +3dVerified

Name: Grinnell College
norm: grinnell college

Name: Grinnell College
norm: grinnell college
Industry: Educationllm

Discovered: May 7, 2023
Breach occurred: Mar 13, 2023 – May 7, 2023
Undetected for: 55 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: 2state-resident count only
Data types: PIIIdentity (basic)Government IDFinancial
Data elements: Social Security number
Attack vector: Misconfiguration
MITRE ATT&CK: T1078 Valid AccountsT1119 Automated Collection
Threat actor: Internal
Regulator citations: reporting this incident to the relevant authorities
Initial access: insider_action

During the incident: Initiated protocols designed to protect the data
Performed forensic examinations to identify potential exposure
Engaged a leading data security and privacy firm to assist our investigation and response
Conducted a thorough analysis of available logs to understand how the incident occurred
Changes made: Provided additional training to employees on file sharing permissions and protocols
Investigating additional technical safeguards to improve the security of our information systems
Offering a complimentary membership in Experian IdentityWorks
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 21 weeks(145 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 6 filings · 6 states

View merged incident ↗

Massachusetts State AGSep 29 · first

Vermont State AGSep 29 · first

Maine State AGSep 29 · first

Indiana State AGSep 29 · first

Montana State AGSep 29 · first · this page

New Hampshire State AG+3d

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-734.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 29, 2023
Raw hash: 618f91385ff96a92d0df28a22e7befd9d35f41cf98407e26db32c09d26ebbb1e

Linked disclosures

Regulatory filings (5) · sorted by filing gap

Reporting entityGrinnell College

Victim entityGrinnell College

Incidentdiscovered May 7, 2023

Stated responseInitiated protocols designed to protect the data

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov