HackingProfessional ServicesProfessional ServicesCustomer Data InvolvedDelayed DiscoveryIdentity (basic)Government IDFinancial accountMediumContained

Castle

bd_438e50907df761b3 · schema v1 · pii pii-v2

Severity

Medium

Discovered

Aug 11, 2026

Filed

Aug 25, 2026

To disclose

14 days

Affected

4state residents only

Confidence

67%

Full breach record for Castle →

Castle Management, LLC notified the NH Attorney General of an incident where an unauthorized actor may have accessed its network between September 2025 and February 2026. Forensic investigation concluded on August 11, 2026, that personal information of 4 New Hampshire residents, including names, SSNs, DOBs, driver's licenses, and financial account numbers, may have been compromised. The company contained the threat, engaged external cybersecurity professionals, and offered credit monitoring services.

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Incident timeline

undetected · 344 days

discovery → filing · 14 days

Sep 1, 2025

Begins

Aug 11, 2026

Discovered

Aug 25, 2026

Filed

vs. sector median

17 wks faster

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed4 affectedView incident

Name: Castle Management, LLC
norm: castle management

Name: Castle
norm: castle
Domain: castle.xyz
Industry: Professional Servicesllm

Discovered: Aug 11, 2026
Breach occurred: Sep 1, 2025 – Feb 28, 2026
Undetected for: 344 daysoccurrence → discovery
Materiality determined: —
Notification sent: Aug 25, 2026
Affected individuals: 4state-resident count only
Data types: Identity (basic)Government IDFinancial account
Attack vector: Unknown
Threat actor: External
Regulator citations: Notified the Attorney General of the State of New Hampshire

During the incident: Worked to contain the threat and secure its internal environment
Commenced a prompt and thorough investigation into the incident
Worked very closely with external cybersecurity professionals
Offering the affected individuals a complimentary membership with a credit monitoring service
Providing notice to the affected residents
Changes made: Continually evaluate and modify its practices to enhance the security and privacy of the personal information it maintains
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 14 days(14 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

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/castle-management-20260825.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 25, 2026
Raw hash: 1733b3854d2b6a5a87ee0412f3838ee79c120433369ccb66174927cb71b703ae

Reporting entityCastle Management, LLC

Victim entityCastle

Incidentdiscovered Aug 11, 2026

Stated responseWorked to contain the threat and secure its internal environment

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov