HackingEducationEducationVulnerability ExploitSupply Chain (3P Vendor)Data ExfiltratedCustomer Data InvolvedEmployee Data InvolvedEducationEmploymentIdentity (basic)Government IDHighActive

Peninsula College

bd_de67e0bf4f97185c · schema v1 · pii pii-v1

Severity

High

Discovered

Jun 16, 2023

Filed

Jul 28, 2023

To disclose

6 weeks

Affected

1,400state residents only

Confidence

69%

Full breach record for Peninsula College →

Peninsula College notified WA AG of a third-party breach involving vendors NSC and TIAA using MOVEit Transfer software. Unauthorized access occurred around May 30, 2023. Student and employee PII, including SSNs, was potentially exposed. 1,400 WA residents affected. Investigation ongoing; credit monitoring offered.

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Washington clock⏱ WA AG >30d6 weeks discovery → filing

⚠ AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Incident timeline

undetected · 17 days

discovery → filing · 6 weeks / 42 days

May 30, 2023

Begins

Jun 16, 2023

Discovered

Jul 28, 2023

Filed

vs. sector median

3 wks faster

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed1,400 affectedView incident

Name: Peninsula College
norm: peninsula college
Domain: pencol.edu

Name: Peninsula College
norm: peninsula college
Domain: pencol.edu
Industry: Educationllm

Discovered: Jun 16, 2023
Breach occurred: May 30, 2023
Undetected for: 17 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: 1,400state-resident count only
Data types: Identity (basic)Government IDEmployment
Data elements: NameSocial Security numberDate of birthStudent ID number
WA-stated cause: Theft or Mistake
WA-stated duration: lifecycle Unknowndexposure Unknownd
WA-stated discovery: Found after the fact
Attack vector: Third-Party / Supply Chain
MITRE ATT&CK: T1195 Supply Chain CompromiseT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Notified Washington State Attorney General's OfficeAttorney General’s Office in Port Angeles mailed and emailed a demand for more information and commitments from NSC
Third party: via National Student Clearinghouse (NSC)
Initial access: exploit_public_facing

During the incident: Assembled an incident response team
Published a website informing students of what occurred
Informed the local media of the cybersecurity incident
Designated contact persons for NSC
Tracking the situation as it waits for more specifics
Changes made: Working with its Attorney General on understanding legal obligations
Investigated tools available for responding to the security incident
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 6 weeks(42 days from discovery to filing)
Compliance flags: WA AG >30d
Discovery-date grounding: AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Status: No extraction artifact recorded for this disclosure.

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://agportal-s3bucket.s3.amazonaws.com/databreach/BreachA26018.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 28, 2023
Raw hash: 056cdb297684edc54cc5e46d79c43f86503f56f3d7fa0b516fedbcfd2bdd6179

Reporting entityPeninsula College

Victim entityPeninsula College

Incidentdiscovered Jun 16, 2023

Stated responseAssembled an incident response team

ComplianceWA AG >30d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com