HackingData ExfiltratedCustomer Data InvolvedIDENTITY_BASICIDENTITY_GOVERNMENTMediumContained

Diamond Chemical Co, LLC

bd_22c10446cef5bf09 · schema v1 · pii pii-v1

Full breach record for Diamond Chemical Co, LLC →

Diamond Chemical Co, LLC notified the New Hampshire Attorney General of a data event affecting one NH resident. Unauthorized access occurred between July 26, 2025, and September 2, 2025, involving unauthorized copying of files containing names and Social Security Numbers. The company notified law enforcement, engaged third-party specialists, and provided 12 months of credit monitoring through Kroll.

This filing is one of 5 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (4) · sorted by filing gap

bd_307f772b01555469Maine State AGfiled 2026-05-05Verified
bd_8ccfe8ade1a101adVermont State AGfiled 2026-05-05Verified
bd_b3fb986e92f2d267Indiana State AGfiled 2026-05-05Verified
bd_0f61c03452e26218Massachusetts State AGfiled 2026-05-01(4d gap)Candidate

Source provenance

Source URL: https://mm.nh.gov/files/uploads/doj/remote-docs/diamond-chemical-20260505.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: May 5, 2026
Raw hash: f829dff81ed2e316c3746c1da4b64be1c0ae15d15f676ee70ef5b065524aba14

Reporting entity

Name: Mullen Coughlin LLC
norm: mullen coughlin

Victim entity

Name: Diamond Chemical Co, LLC
norm: diamond chemical

Incident

Discovered: Sep 2, 2025
Materiality determined: —
Notification sent: May 5, 2026
Affected individuals: 1
Data types: IDENTITY_BASICIDENTITY_GOVERNMENT
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1041 Exfiltration Over C2 Channel
Threat actor: External
Initial access: valid_credentials

Compliance

Time to disclose: 35 weeks(245 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Extraction provenance

Status: No extraction artifact recorded for this disclosure.