MalwareOtherRansomwareData EncryptedTargetedIdentity (basic)Government IDFinancial accountMediumContained

BTU International, Inc.

bd_141b7d5af22bce83 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Oct 27, 2025

Filed

Dec 26, 2025

To disclose

9 weeks

Affected · nationwide

3732 in this filing

Linked

5 filings

Confidence

66%

Full breach record for BTU International, Inc. →2 incidents on file

BTU International experienced a ransomware attack on August 11, 2025, discovered on October 27, 2025. The incident affected 373 individuals, including 2 Maine residents. Personal information accessed included names, Social Security numbers, and financial account numbers. BTU notified the FBI, engaged cybersecurity specialists, and provided 12 months of credit monitoring to affected individuals. Notices were sent on December 26, 2025.

J jump to incidentP pin to compareR raw source

Maine clockDiscovered Oct 27, 2025 → Filed with AG Dec 26, 202560d ⏱ ME AG >30d9 weeks discovery → filing

⚠ AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Incident timeline

undetected · 77 days

discovery → filing · 9 weeks / 60 days

Aug 11, 2025

Begins

Oct 27, 2025

Discovered

Dec 26, 2025

Filed

vs. sector median

+1 wks slower

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

New Hampshire State AGbd_23f41b168cb4d6a92025-12-26Verified
Vermont State AGbd_48859c292fd5840a2025-12-26Verified
Nebraska State AGbd_e116cfbf966052362025-12-26Verified
Massachusetts State AGbd_0feb732ba449ac292025-12-27 · +1dVerified

Name: Buchanan Ingersoll & Rooney PC
norm: buchanan ingersoll rooney

Name: BTU International, Inc.
norm: btu international
Industry: Otherllm

Discovered: Oct 27, 2025
Breach occurred: Aug 11, 2025
Undetected for: 77 daysoccurrence → discovery
Materiality determined: —
Notification sent: Dec 26, 2025
Affected individuals: 373state + nationwide
Data types: Identity (basic)Government IDFinancial account
Data elements: Social Security number
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: Notified U.S. federal law enforcement, including the Federal Bureau of Investigation ("FBI")

During the incident: Took protective actions to stop the unauthorized access
Notified U.S. federal law enforcement, including the Federal Bureau of Investigation ("FBI")
Assessed the security of our network and systems
Launched an investigation with the assistance of leading cybersecurity specialists
Providing the potentially affected individuals one (1) year of complimentary credit protection and monitoring services through Cyberscout at no cost to the individuals
Changes made: Installed monitoring devices on our IT systems to detect suspicious activity
Working to implement additional safeguards
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 9 weeks(60 days from discovery to filing)
Compliance flags: ME AG >30d · 60d
Discovery-date grounding: AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.
Clock breakdown: Statute Window Elapsed Threshold Status
Maine
Discovered: Oct 27, 2025
→ Filed with AG: Dec 26, 2025
60d 30 days (soft) ME AG >30d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Oct 27, 2025 → Filed with AG: Dec 26, 2025	60d	30 days (soft)	ME AG >30d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 5 filings · 5 states

View merged incident ↗

New Hampshire State AGDec 26 · first

Vermont State AGDec 26 · first

Nebraska State AGDec 26 · first

Maine State AGDec 26 · 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://www.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/577bc65b-57fc-4b25-9f34-a636f45f3e33.html
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 26, 2025
Raw hash: 5b70904d3cba96ee0a4062613be616eb41f83d0b0b92eba0269248381e3dace4

Linked disclosures

Regulatory filings (4) · sorted by filing gap

Reporting entityBuchanan Ingersoll & Rooney PC

Victim entityBTU International, Inc.

Incidentdiscovered Oct 27, 2025

Stated responseTook protective actions to stop the unauthorized access

ComplianceME AG >30d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov