AccidentalHealthcareEducationHealthcareMisdeliveryCustomer Data InvolvedEmployee Data InvolvedPIIGovernment IDIdentity (basic)MediumResolved

Columbia University Irving Medical Center

bd_6386a1d4f6e2fd00 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Mar 15, 2013

Filed

May 6, 2013

To disclose

7 weeks

Affected · nationwide

4071 in this filing

Confidence

67%

Full breach record for Columbia University Irving Medical Center →2 incidents on file

Columbia University Medical Center inadvertently emailed an Excel file containing residency match lists and hidden Social Security Numbers to students, faculty, and staff on March 15, 2013. 407 medical students were affected. The incident was detected immediately, emails were deleted, and 12 months of credit monitoring was offered. One New Hampshire resident was notified on April 19, 2013.

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Incident timeline

discovery → filing · 7 weeks / 52 days

Mar 15, 2013

Discovered

May 6, 2013

Filed

vs. sector median

5 wks faster

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed407 affectedView incident

Name: Columbia University Irving Medical Center
norm: columbia university irving medical center

Name: Columbia University Irving Medical Center
norm: columbia university irving medical center
Industry: HealthcarellmEducationllm

Discovered: Mar 15, 2013
Materiality determined: —
Notification sent: Apr 19, 2013
Affected individuals: 407state + nationwide
Data types: PIIGovernment IDIdentity (basic)
Data elements: Social Security number
Attack vector: Misconfiguration
MITRE ATT&CK: T1566.002 Spearphishing Link
Regulator citations: Notified New Hampshire Attorney General

During the incident: Blocked the additional forwarding of emails containing the Excel file
Deleted emails from the email server
Notified affected individuals by letter
Offered 12 months of credit monitoring and identity theft protection services
Changes made: Implementation of additional tools to search and secure sensitive information
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 7 weeks(52 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

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://mm.nh.gov/files/uploads/doj/remote-docs/columbia-university-medical-center-20130506.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: May 6, 2013
Raw hash: 49af8b5c1f62d86fb935b76359623aae57379a5bf2fd96eca546a8fa1b9881c7

Reporting entityColumbia University Irving Medical Center

Victim entityColumbia University Irving Medical Center

Incidentdiscovered Mar 15, 2013

Stated responseBlocked the additional forwarding of emails containing the Excel file

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov