HackingFinancial ServicesFinanceCustomer Data InvolvedPIIIdentity (basic)LowContained

Beacon Mutual Insurance

bd_e4cb15dcb1bd517c · schema v1 · pii pii-v1

Severity

Low

Discovered

May 1, 2026

Filed

May 18, 2026

To disclose

17 days

Affected

607state residents only

Linked

11 filings

Confidence

66%

Full breach record for Beacon Mutual Insurance →

The Beacon Mutual Insurance Company reported an external system breach (hacking) occurring between January 7 and January 14, 2026, discovered on May 1, 2026. The incident affected 607 Maine residents. The company provided written notification and offered one year of credit monitoring and identity theft protection services through Experian.

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Leak gap clock⏱ Leak >90d17 days 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 · 114 days

discovery → filing · 17 days

Jan 7, 2026

Begins

May 1, 2026

Discovered

May 18, 2026

Filed

vs. sector median

7 wks faster

This filing is one of 11 about the same incident.View merged incident

Linked disclosures

Why this link?

Ransomware claims (2)

Leak Siteinc_ransombd_da7048f19e46b32f2026-01-31 · +107dVerified by operator
Leak Siteinc_ransombd_5b90158bd9f951672026-01-14 · +124dVerified by operator

Regulatory filings (8) · sorted by filing gap

Massachusetts State AGbd_5d7dc416180d53c82026-05-18Verified by operator
Montana State AGbd_88cdbba0a563b7f12026-05-18Verified
Vermont State AGbd_8abe1f6930c743e62026-05-18Verified by operator
California State AGbd_9212ea1e5259bdac2026-05-18Verified by operator

Show 4 more filings ↓up to 1d gap

Indiana State AGbd_96f08282e4c86e4a2026-05-18Verified by operator
Nebraska State AGbd_acbc06cd15404c7b2026-05-18Verified
New Hampshire State AGbd_ffd3dfb51f7f7e862026-05-18Verified by operator
Texas State AGbd_a561b8d222dfacc42026-05-19 · +1dVerified

Name: Beacon Mutual Insurance
norm: beacon mutual insurance
Domain: beaconmutual.com

Name: Beacon Mutual Insurance
norm: beacon mutual insurance
Domain: beaconmutual.com
Industry: Financial Servicesllm

Discovered: May 1, 2026
Breach occurred: Jan 7, 2026 – Jan 14, 2026
Undetected for: 114 daysoccurrence → discovery
Materiality determined: —
Notification sent: May 18, 2026
Affected individuals: 607state-resident count only
Data types: Identity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing Application
Threat actor: External
Regulator citations: Filed data breach notice with the Maine Office of the Attorney General
Initial access: exploit_public_facing

During the incident: Sent written notification to affected Maine residents
Offered one year of credit monitoring and identity theft protection services through Experian
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 17 days(17 days from discovery to filing)
Compliance flags: Leak >90dME AG ≤30d · 17d
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: May 1, 2026
→ Filed with AG: May 18, 2026
17d 30 days ME AG ≤30d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: May 1, 2026 → Filed with AG: May 18, 2026	17d	30 days	ME AG ≤30d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 9 filings · 9 states

View merged incident ↗

Massachusetts State AGMay 18 · first

Montana State AGMay 18 · first

Vermont State AGMay 18 · first

California State AGMay 18 · first

Indiana State AGMay 18 · first

Nebraska State AGMay 18 · first

New Hampshire State AGMay 18 · first

Maine State AGMay 18 · first · this page

Texas 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/b0778e0b-f815-440f-933c-4a6bd75442de.html
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: May 18, 2026
Raw hash: 1940fe28b0067401f7ccf6177903c91430e4ddf9d631d0d227f0a707ed29f8f4

Linked disclosures

Ransomware claims (2)

Regulatory filings (8) · sorted by filing gap

Reporting entityBeacon Mutual Insurance

Victim entityBeacon Mutual Insurance

Incidentdiscovered May 1, 2026

Stated responseSent written notification to affected Maine residents

ComplianceLeak >90d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov