HackingProfessional ServicesProfessional ServicesData ExfiltratedTargetedIdentity (basic)HighContained

Manpower of Lansing, MI Inc.

bd_ccfe23f9fb354e10 · schema v1 · pii pii-v1

Severity

High

Discovered

Jul 28, 2025

Filed

Aug 11, 2025

To disclose

14 days

Affected · nationwide

144,18911 in this filing

Linked

8 filings

Confidence

65%

Full breach record for Manpower of Lansing, MI Inc. →

Manpower of Lansing, MI Inc. disclosed an external system breach (hacking) occurring between Dec 29, 2024 and Jan 12, 2025. Discovered July 28, 2025, the incident affected 144,189 individuals, including 11 Maine residents. Personal information (names and other identifiers) was potentially acquired. The company engaged forensic experts, notified the FBI, and is offering 12 months of Equifax credit monitoring.

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Maine clockDiscovered Jul 28, 2025 → Filed with AG Aug 11, 202514d ✓ ME AG ≤30d14 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 · 211 days

discovery → filing · 14 days

Dec 29, 2024

Begins

Jul 28, 2025

Discovered

Aug 11, 2025

Filed

vs. sector median

17 wks faster

This filing is one of 8 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (7) · sorted by filing gap

Vermont State AGbd_4b647d81ffd7347c2025-08-11Verified
Massachusetts State AGbd_4fbc412296d8d6ef2025-08-11Verified
Nebraska State AGbd_9655b51f2ac157972025-08-11Verified
New Hampshire State AGbd_b5956ba9bace8fc72025-08-11Verified

Show 3 more filings ↓up to 161d gap

Texas State AGbd_929f56b712ed949d2025-08-12 · +1dVerified
Montana State AGbd_e92e28cc50a946e02025-08-12 · +1dVerified
Indiana State AGbd_19184371c4f242b02025-03-03 · +161dCandidate

Name: Constangy, Brooks, Smith & Prophete, LLP
norm: constangy brooks smith prophete

Name: Manpower of Lansing, MI Inc.
norm: manpower of lansing mi
Industry: Professional Servicesllm

Discovered: Jul 28, 2025
Breach occurred: Dec 29, 2024 – Jan 12, 2025
Undetected for: 211 daysoccurrence → discovery
Materiality determined: —
Notification sent: Aug 11, 2025
Affected individuals: 144,189state + nationwide
Data types: Identity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: Notified the Maine Attorney General
Initial access: exploit_public_facing

During the incident: Launched an investigation with the support of external cybersecurity experts
Took steps to secure our IT environment
Notified the Federal Bureau of Investigation
Offering you the opportunity to enroll in complimentary Equifax credit monitoring and identity theft protection services
Changes made: Implementing enhanced security measures to help prevent a similar incident from occurring in the future
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 14 days(14 days from discovery to filing)
Compliance flags: ME AG ≤30d · 14d
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: Jul 28, 2025
→ Filed with AG: Aug 11, 2025
14d 30 days ME AG ≤30d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Jul 28, 2025 → Filed with AG: Aug 11, 2025	14d	30 days	ME AG ≤30d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 8 filings · 8 states

View merged incident ↗

Indiana State AGMar 3 · first

Vermont State AG+161d

Massachusetts State AG+161d

Nebraska State AG+161d

New Hampshire State AG+161d

Maine State AG+161d · this page

Texas State AG+162d

Montana State AG+162d

Pattern: first filing Mar 3 (IN), last Aug 12 (MT) — a 162-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.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/7f78311b-64ff-4436-82b7-187ed0d23685.html
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 11, 2025
Raw hash: c11141ae2c0593ef1e743bb9225e1edac1affc94c8524a8399a520c5b21ab3ef

Linked disclosures

Regulatory filings (7) · sorted by filing gap

Reporting entityConstangy, Brooks, Smith & Prophete, LLP

Victim entityManpower of Lansing, MI Inc.

Incidentdiscovered Jul 28, 2025

Stated responseLaunched an investigation with the support of external cybersecurity experts

ComplianceME AG ≤30d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov