MalwareEducationEducationRansomwareStolen CredentialsData ExfiltratedTargetedIdentity (basic)Government IDMediumContained

The Episcopal School of Dallas

bd_c9b61f38fce2e656 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Mar 18, 2023

Filed

Aug 31, 2023

To disclose

24 weeks

Affected

2state residents only

Linked

3 filings

Confidence

65%

Full breach record for The Episcopal School of Dallas →

The Episcopal School of Dallas experienced a ransomware incident between March 16-18, 2023. An unauthorized actor accessed systems, deployed malware, and potentially exfiltrated limited PII (names, SSNs, DOBs, driver's licenses) from employees, students, and community members. ESD notified law enforcement and offered credit monitoring. Notice was filed with NH AG on Aug 30, 2023, covering 2 NH residents.

J jump to incidentP pin to compareR raw source

Incident timeline

undetected · 2 days

discovery → filing · 24 weeks / 166 days

Mar 16, 2023

Begins

Mar 18, 2023

Discovered

Aug 31, 2023

Filed

vs. sector median

+17 wks slower

This filing is one of 3 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

Vermont State AGbd_18336b1f6563e5792023-08-30 · +1dVerified
Massachusetts State AGbd_cccb4cad91b338482023-08-30 · +1dVerified

Name: The Episcopal School of Dallas
norm: the episcopal school of dallas

Name: The Episcopal School of Dallas
norm: the episcopal school of dallas
Industry: Educationllm

Discovered: Mar 18, 2023
Breach occurred: Mar 16, 2023 – Mar 18, 2023
Undetected for: 2 daysoccurrence → discovery
Materiality determined: —
Notification sent: Aug 30, 2023
Affected individuals: 2state-resident count only
Data types: Identity (basic)Government ID
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: notified federal law enforcementproviding written notice of this incident to relevant state regulators
Initial access: valid_credentials

During the incident: Launched an investigation with outside assistance
Restored impacted computer systems to operability
Conducted a comprehensive programmatic and manual review of the data
Notified federal law enforcement
Providing access to credit monitoring services for through Experian
Providing impacted individuals with guidance on how to better protect against identity theft and fraud
Changes made: Providing access to credit monitoring services for through Experian
Providing impacted individuals with guidance on how to better protect against identity theft and fraud
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 24 weeks(166 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 3 states

View merged incident ↗

Vermont State AGAug 30 · first

Massachusetts State AGAug 30 · first

New Hampshire State AG+1d · this page

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/episcopal-school-dallas-20230831.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 31, 2023
Raw hash: 1555f64c4d9aae6012227fd4adf801de8c0642bceff82f36359bd2cae99811c4

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityThe Episcopal School of Dallas

Victim entityThe Episcopal School of Dallas

Incidentdiscovered Mar 18, 2023

Stated responseLaunched an investigation with outside assistance

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov