MalwareManufacturingManufacturingRansomwarePlayData ExfiltratedData PublishedRansom DemandedCustomer Data InvolvedDelayed DiscoveryIdentity (basic)Government IDMediumContained

Block Engineering: Quantum Cascade Laser Products

bd_debb1a9a60a8a488 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Mar 18, 2026

Filed

Jul 17, 2026

To disclose

17 weeks

Affected

5state residents only

Linked

2 filings

Confidence

66%

Full breach record for Block Engineering: Quantum Cascade Laser Products →2 incidents on file

Block Engineering LLC, a manufacturing company, experienced a ransomware incident attributed to the group Play. Unauthorized access occurred between March 16-17, 2026, and was discovered on March 18, 2026. The attacker exfiltrated data and published it on a leak site on March 27, 2026. The breach affected 5 New Hampshire residents, exposing names and Social Security numbers. The company engaged forensic investigators, secured its network, and offered 12 months of credit monitoring.

J jump to incidentP pin to compareR raw source

Leak gap clock⏱ Leak >90d17 weeks discovery → filing

Incident timeline

undetected · 2 days

discovery → filing · 17 weeks / 121 days

Mar 16, 2026

Begins

Mar 18, 2026

Discovered

Jul 17, 2026

Filed

vs. sector median

+7 wks slower

This filing is one of 2 about the same incident.View merged incident

A leak claim by play about this victim predates this filing by 114 days.View originating leak claim

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

Massachusetts State AGbd_178a7c475f7092152026-07-18 · +1dVerified

Name: Block Engineering LLC
norm: block engineering

Name: Block Engineering: Quantum Cascade Laser Products
norm: block engineering quantum cascade laser products
Domain: blockeng.com
Industry: Manufacturingllm

Discovered: Mar 18, 2026
Breach occurred: Mar 16, 2026 – Mar 17, 2026
Undetected for: 2 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jul 17, 2026
Affected individuals: 5state-resident count only
Data types: Identity (basic)Government ID
Attack vector: Ransomware· Play
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1041 Exfiltration Over C2 ChannelT1078 Valid Accounts
Threat actor: PlayExternalFinancial
Regulator citations: Reported to New Hampshire Attorney GeneralReported to federal law enforcement

During the incident: Took immediate steps to secure its network
Engaged Kennedys law firm
Retained CFC Security, Inc. d/b/a/ CFC Response to conduct an investigation
Engaged a third-party vendor to download the full data set published on the threat actor’s leak site
Initiated a review of the data set to determine what information was involved
Notified individuals via U.S. mail
Offered twelve (12) months of complimentary credit monitoring and identity protection services through Kroll
Set up a professional call center through Kroll to assist notified individuals
Reported the incident to federal law enforcement
Changes made: Reviewing its existing security policies and protections
Adopting additional security to safeguard against evolving threats moving forward
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 17 weeks(121 days from discovery to filing)
Compliance flags: Leak >90d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings · 2 states

View merged incident ↗

New Hampshire State AGJul 17 · first · this page

Massachusetts State AG+1d

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/block-engineering-20260717.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 17, 2026
Raw hash: b0bd755b9a5a1ff99367e593af420a4285cf627d2944273add4da85f33f1bb86

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityBlock Engineering LLC

Victim entityBlock Engineering: Quantum Cascade Laser Products

Incidentdiscovered Mar 18, 2026

Stated responseTook immediate steps to secure its network

ComplianceLeak >90d

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov