PhysicalEducationEducationLossEmployee Data InvolvedGovernment IDIdentity (basic)MediumContained

CHAPMAN UNIVERSITY

bd_5e2c20413808e170 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Oct 21, 2017

Filed

Nov 8, 2017

To disclose

18 days

Affected

Not disclosed

Confidence

65%

Full breach record for CHAPMAN UNIVERSITY →5 incidents on file

Chapman University reported the loss of an external hard drive from its Harry and Diane Rinker Health Science Campus on October 17, 2017. The drive belonged to an employee with access to network drives containing W-9 forms. The university treated all accessible data as potentially compromised. Affected individuals were offered one year of Experian IdentityWorks credit monitoring. The university plans additional security training for faculty and staff.

J jump to incidentP pin to compareR raw source

California clockDiscovered Oct 21, 2017 → Notified Oct 28, 20177d ✓ CA 60-day OK18 days discovery → filing

Incident timeline

undetected · 4 days

discovery → filing · 18 days

Oct 17, 2017

Begins

Oct 21, 2017

Discovered

Nov 8, 2017

Filed

vs. sector median

8 wks faster

Tracked as a single-filing incident — the only disclosure on record for this event so far.ConfirmedView incident

Name: CHAPMAN UNIVERSITY
norm: chapman university

Name: CHAPMAN UNIVERSITY
norm: chapman university
Industry: Educationllm

Discovered: Oct 21, 2017
Breach occurred: Oct 17, 2017
Undetected for: 4 daysoccurrence → discovery
Materiality determined: —
Notification sent: Oct 28, 2017
Affected individuals: Not disclosed
Data types: Government IDIdentity (basic)
Attack vector: Unknown
MITRE ATT&CK: T1052 Exfiltration Over Physical Medium

During the incident: Offering a complimentary one-year membership of Experian IdentityWorks Credit 3B
Changes made: Planning to conduct additional training beyond the information security programs and policies we already provide in the academic department where the matter arose
Further training planned for all university faculty
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 18 days(18 days from discovery to filing)
Compliance flags: CA 60-day OK · 7d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.
Clock breakdown: Statute Window Elapsed Threshold Status
California
Discovered: Oct 21, 2017
→ Notified: Oct 28, 2017
7d 60 days (analyst band, pre-2026 discoveries) CA 60-day OK

Statute	Window	Elapsed	Threshold	Status
California	Discovered: Oct 21, 2017 → Notified: Oct 28, 2017	7d	60 days (analyst band, pre-2026 discoveries)	CA 60-day OK

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://oag.ca.gov/ecrime/databreach/reports/sb24-103336
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Nov 8, 2017
Raw hash: 90804c0e38a2db162bc346093f4a16f8c6990206c003f886c2b7628cfb006413

Reporting entityCHAPMAN UNIVERSITY

Victim entityCHAPMAN UNIVERSITY

Incidentdiscovered Oct 21, 2017

Stated responseOffering a complimentary one-year membership of Experian IdentityWorks Credit 3B

ComplianceCA 60-day OK

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov