HackingProfessional ServicesProfessional ServicesData ExfiltratedEmployee Data InvolvedHealth (basic)Identity (basic)Government IDMediumContained

Service Management Group, LLC

bd_ca67a20daaaa5beb · schema v1 · pii pii-v2

Severity

Medium

Discovered

Mar 31, 2026

Filed

Sep 1, 2026

To disclose

—

Affected

8state residents only

Linked

2 filings

Confidence

67%

Full breach record for Service Management Group, LLC →

Service Management Group, LLC detected suspicious activity on March 31, 2026, resulting from unauthorized access to internal corporate systems between March 18 and April 7, 2026. An unauthorized party obtained files containing personal information of employees and family members, including names, Social Security numbers, driver's license numbers, and health insurance information. The company engaged third-party experts, notified law enforcement, and implemented additional security measures. Two Rhode Island residents were affected.

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Incident timeline

undetected · 13 days

Mar 18, 2026

Begins

Mar 31, 2026

Discovered

Sep 1, 2026

Filed

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

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

Indiana State AGbd_5741782909ca028b2026-09-11 · +10dVerified

Name: Service Management Group, LLC
norm: service management

Name: Service Management Group, LLC
norm: service management
Industry: Professional Servicesllm

Discovered: Mar 31, 2026
Breach occurred: Mar 18, 2026 – Apr 7, 2026
Undetected for: 13 daysoccurrence → discovery
Materiality determined: —
Notification sent: Sep 11, 2026
Affected individuals: 8state-resident count only
Data types: Health (basic)Identity (basic)Government ID
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1041 Exfiltration Over C2 Channel
Threat actor: External
Regulator citations: Notified law enforcement

During the incident: Launched an investigation
Engaged third-party cybersecurity experts
Notified law enforcement
Implemented additional security measures designed to enhance the security of our network, systems, and data
Offering a complimentary 24-month membership of Experian IdentityWorks
Changes made: Implemented additional security measures designed to enhance the security of our network, systems, and data
Source: Quoted from the filing itself, not independently verified.

Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings · 2 states

View merged incident ↗

Massachusetts State AGSep 1 · first · this page

Indiana State AG+10d

Pattern: first filing Sep 1 (MA), last Sep 11 (IN) — a 10-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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.mass.gov/doc/2026-1532-service-management-group-llc-smg/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 1, 2026
Raw hash: 7b8e105c94c95fffa372685010f37c609286ca9e006e95d74946c6b8fe207458

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityService Management Group, LLC

Victim entityService Management Group, LLC

Incidentdiscovered Mar 31, 2026

Stated responseLaunched an investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov