MalwareEducationEducationRansomwareStolen CredentialsData ExfiltratedData EncryptedCustomer Data InvolvedMulti-Stage ChainGovernment IDFinancial accountMediumContained

Springfield Public Schools

bd_994bfbeb2739386c · schema v1 · pii pii-v2

Severity

Medium

Discovered

Sep 5, 2026

Filed

Oct 13, 2026

To disclose

5 weeks

Affected

2state residents only

Linked

3 records

Confidence

69%

Full breach record for Springfield Public Schools →3 incidents on file

Springfield Public Schools experienced a ransomware attack where an attacker compromised an endpoint on or around August 14, 2026, and encrypted servers on September 5, 2026. The attacker exfiltrated files prior to encryption. Two New Hampshire residents were identified as affected, with their social security numbers, driver's license numbers, and/or bank account information potentially accessed. The organization engaged forensic experts, notified law enforcement, and is offering credit monitoring.

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Incident timeline

undetected · 22 days

discovery → filing · 5 weeks / 38 days

Aug 14, 2026

Begins

Sep 5, 2026

Discovered

Oct 13, 2026

Filed

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

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Siteinterlockbd_2c0739f61d9a4c682026-09-15 · +28dCandidate

Regulatory filings (1) · sorted by filing gap

Massachusetts State AGbd_aa4b1d7872e87ba92026-09-01 · +42dVerified by operator

Name: Springfield Public Schools
norm: springfield public schools
Domain: bulkley.com

Name: Springfield Public Schools
norm: springfield public schools
Domain: springfieldpublicschools.com
Industry: Educationllm

Discovered: Sep 5, 2026
Breach occurred: Aug 14, 2026 – Sep 5, 2026
Undetected for: 22 daysoccurrence → discovery
Materiality determined: —
Notification sent: Oct 6, 2026
Affected individuals: 2state-resident count only
Data types: Government IDFinancial account
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1041 Exfiltration Over C2 ChannelT1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: Notified New Hampshire Attorney General

During the incident: Rebuilding its servers and restoring information from backups
Engaged cybersecurity forensic experts
Conducted an internal investigation, which included a review of potentially compromised accounts
Notified and continues to work with state and federal law enforcement
Provided identity theft protection for staff
Changes made: Implemented additional measures to enhance its technology security safeguards
Recalibrating our scanning tools
Offering twenty-four months of complimentary credit monitoring
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 5 weeks(38 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings · 2 states

View merged incident ↗

Massachusetts State AGSep 1 · first

New Hampshire State AG+42d · this page

Pattern: first filing Sep 1 (MA), last Oct 13 (NH) — a 42-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://mm.nh.gov/files/uploads/doj/remote-docs/springfield-public-schools-20261013.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 13, 2026
Raw hash: f2ad6a1e29d037f016a537c483c2ca1f75bd297a1164628330b2b160f9aa6f3a

Linked disclosures

Ransomware claims (1)

Regulatory filings (1) · sorted by filing gap

Reporting entitySpringfield Public Schools

Victim entitySpringfield Public Schools

Incidentdiscovered Sep 5, 2026

Stated responseRebuilding its servers and restoring information from backups

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov