HackingOtherData ExfiltratedGovernment IDIdentity (basic)MediumContained

Sullivan Environmental Services

bd_00582856f774787f · schema v1 · pii pii-v1

Severity

Medium

Discovered

Jul 29, 2026

Filed

Jul 31, 2026

To disclose

2 days

Affected

1state residents only

Linked

3 filings

Confidence

67%

Full breach record for Sullivan Environmental Services →2 incidents on file

Sullivan Environmental Services, Inc. notified the New Hampshire Attorney General of a data security event affecting one New Hampshire resident. The incident involved unauthorized acquisition of the resident's name and Social Security Number. SES engaged cybersecurity specialists, confirmed the scope on July 29, 2026, and sent notification on July 31, 2026. No evidence of misuse was found.

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Incident timeline

discovery → filing · 2 days

Jul 29, 2026

Discovered

Jul 31, 2026

Filed

vs. sector median

6 wks faster

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

Massachusetts State AGbd_722d92b360b7d6d62026-07-31Candidate
Nebraska State AGbd_de9755a6376b13392026-07-31Verified

Name: Sullivan Environmental Services
norm: sullivan environmental
Domain: sesrvcs.com

Name: Sullivan Environmental Services
norm: sullivan environmental
Domain: sesrvcs.com
Industry: Otherllm

Discovered: Jul 29, 2026
Materiality determined: —
Notification sent: Jul 31, 2026
Affected individuals: 1state-resident count only
Data types: Government IDIdentity (basic)
Attack vector: Unknown
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Regulator citations: Notified New Hampshire Attorney General
Initial access: valid_credentials

During the incident: Engaged cybersecurity specialists to conduct a thorough review of the affected data
Notified the identified individual
Provided them with steps they can take to protect their personal information
Provided them with information about its toll-free call center
Changes made: Implemented several measures to enhance our security posture and reduce the risk of similar future incidents
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 2 days(2 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 ↗

Massachusetts State AGJul 31 · first

Nebraska State AGJul 31 · first

New Hampshire State AGJul 31 · first · 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/sullivan-environmental-services-20260731.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 31, 2026
Raw hash: 9c3a3226d3ddcfc6d519ccce687e2b99c5d7d2500b33bbbd67021052d18c56f5

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entitySullivan Environmental Services

Victim entitySullivan Environmental Services

Incidentdiscovered Jul 29, 2026

Stated responseEngaged cybersecurity specialists to conduct a thorough review of the affected data

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov