HackingEducationEducationData ExfiltratedCustomer Data InvolvedEmployee Data InvolvedCredentialsEducationFinancial accountHealth (basic)Identity (basic)Government IDPHICriticalContained

Edmonds School District

bd_de1acf46bdc56b2c · schema v1 · pii pii-v1

Severity

Critical

Discovered

Jan 31, 2023

Filed

Oct 6, 2023

To disclose

35 weeks

Affected

143,536state residents only

Linked

7 filings

Confidence

70%

Full breach record for Edmonds School District →4 incidents on file

Edmonds School District No. 15 (WA) reported a cyberattack where unauthorized actors accessed network data between Jan 16-31, 2023. Discovered Jan 31, 2023. Data included names, SSNs, financial accounts, medical info, and credentials. 143,536 Washington residents affected. Notices sent Oct 2023 and Jan 2024. Remediation included forensic investigation and credit monitoring.

J jump to incidentP pin to compareR raw source

Washington clock✗ WA AG >90d35 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 · 15 days

discovery → filing · 35 weeks / 248 days

Jan 16, 2023

Begins

Jan 31, 2023

Discovered

Oct 6, 2023

Filed

vs. sector median

+27 wks slower

This filing is one of 7 about the same incident.View merged incident

A leak claim by akira about this victim predates this filing by 248 days.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (2)

Leak Siteakirabd_946936f7fcb626ad2023-08-24 · +42dVerified by operator
Leak Siteakirabd_a3c1da9ae24ac5232023-01-31 · +248dVerified by operator

Regulatory filings (4) · sorted by filing gap

New Hampshire State AGbd_8fbc9c1b971a59932023-10-06Verified
New Hampshire State AGbd_1b4de5792e8a02632023-05-18 · +141dVerified
Montana State AGbd_9957884c9a34dc642023-05-15 · +144dVerified by operator
Massachusetts State AGbd_eadbb7a0a4019ca22023-05-15 · +144dVerified by operator

Name: Mullen Coughlin LLC
norm: mullen coughlin

Name: Edmonds School District
norm: edmonds school district
Domain: edmonds.wednet.edu
Industry: Educationllm

Discovered: Jan 31, 2023
Breach occurred: Jan 16, 2023 – Jan 31, 2023
Undetected for: 15 daysoccurrence → discovery
Materiality determined: —
Notification sent: Oct 6, 2023
Affected individuals: 143,536state-resident count only
Data types: Identity (basic)Government IDFinancial accountHealth (basic)Credentials
Data elements: NameSocial Security numberDriver's licence numberFinancial account numberDate of birthStudent ID numberPassport numberHealth insurance IDMedical information
WA-stated cause: Cyberattack
WA-stated duration: lifecycle 1-99dexposure 1-99d
WA-stated discovery: Found while ongoingContained same day
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1078 Valid Accounts
Threat actor: External
Regulator citations: Notified Washington State Office of the Attorney General
Initial access: exploit_public_facing

During the incident: Launched an investigation with the assistance of third-party forensic specialists
Undertook a comprehensive review of the data at risk
Notified federal law enforcement regarding the event
Provided individuals whose personal information was potentially impacted by this event access to credit monitoring services for one (1) year through IDX at no cost to the individuals
Provided impacted individuals with guidance on how to better protect against identity theft and fraud
Provided individuals with information on how to place a fraud alert and security freeze on one’s credit file
Encouraged individuals to contact the Federal Trade Commission, their state Attorney General, and law enforcement to report attempted or actual identity theft and fraud
Changes made: Implemented additional safeguards related to data privacy and security
Working with third-party specialists to strengthen the security of its systems
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 35 weeks(248 days from discovery to filing)
Compliance flags: WA AG >90dLeak >180d
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.

Filing propagation · 5 filings · 4 states

View merged incident ↗

Montana State AGMay 15 · first

Massachusetts State AGMay 15 · first

New Hampshire State AG+3d

New Hampshire State AG+144d

Washington State AG+144d · this page

Pattern: first filing May 15 (MT), last Oct 6 (WA) — a 144-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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/BreachA19940.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 6, 2023
Raw hash: 94bae8ef81c32ecb33dc813bad20028d2c06d44b39f8d047fde8715594d8f375

Linked disclosures

Ransomware claims (2)

Regulatory filings (4) · sorted by filing gap

Reporting entityMullen Coughlin LLC

Victim entityEdmonds School District

Incidentdiscovered Jan 31, 2023

Stated responseLaunched an investigation with the assistance of third-party forensic specialists

ComplianceWA AG >90d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com