HackingHealthcareTechnologyHealthcareVulnerability ExploitSupply Chain (3P Vendor)Data ExfiltratedCustomer Data InvolvedPIIIdentity (basic)LowContained

MAXIMUS, Inc.

bd_67d6131ab83daa01 · schema v1 · pii pii-v1

Severity

Low

Discovered

May 30, 2023

Filed

Aug 25, 2023

To disclose

12 weeks

Affected

Not disclosed

Linked

18 records

Confidence

66%

Full breach record for MAXIMUS, Inc. →6 incidents on file

Maximus Health Services, Inc. notified consumers of a data breach involving Progress Software's MOVEit Transfer application. An unauthorized party accessed files between May 27-31, 2023, exploiting a vulnerability in the third-party software. Personal information was accessed. Maximus engaged forensic experts, took systems offline, and is offering two years of credit monitoring.

J jump to incidentP pin to compareR raw source

Vermont clock✗ VT AG >45 bday12 weeks discovery → filing

⚠ unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Incident timeline

undetected · 3 days

discovery → filing · 12 weeks / 87 days

May 27, 2023

Begins

May 30, 2023

Discovered

Aug 25, 2023

Filed

vs. sector median

+3 wks slower

This filing is one of 18 records about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

Delaware State AGbd_97027e573fc51e132023-08-25Verified by operator
Washington State AGbd_d4deac1eb085d27a2023-08-25Verified
New Hampshire State AGbd_fe9387821fda92642023-08-25Verified by operator
Hawaii State AGbd_d3d3db6e2dd7a7a82023-08-26 · +1dVerified by operator

Show 6 more filings ↓up to 138d gap

Indiana State AGbd_45d3fdf48f1c933d2023-08-24 · +1dVerified by operator
Oregon State AGbd_4a2584ab84dfe0f12023-08-29 · +4dVerified by operator
South Carolina State AGbd_a90da3e7c4e0509c2023-08-29 · +4dVerified
California State AGbd_bf25ea19ea12a1242023-08-18 · +7dVerified
HHS OCRbd_dedafa3bd216907a2023-08-04 · +21dVerified
Idaho State AGbd_5312733f463970a32024-01-10 · +138dVerified by operator

Showing first 10 of 17 linked disclosures.

Name: MAXIMUS, Inc.
norm: maximus
Domain: maximus.com

Name: MAXIMUS, Inc.
norm: maximus
Domain: maximus.com
Industry: HealthcarellmTechnologyllm

Discovered: May 30, 2023
Breach occurred: May 27, 2023 – May 31, 2023
Undetected for: 3 daysoccurrence → discovery
Materiality determined: —
Notification sent: Aug 25, 2023
Affected individuals: Not disclosed
Data types: PIIIdentity (basic)
Attack vector: Third-Party / Supply Chain
MITRE ATT&CK: T1195 Supply Chain CompromiseT1190 Exploit Public-Facing Application
Threat actor: ExternalFinancial
Regulator citations: Notified the DepartmentCooperating with law enforcement
Third party: via Progress Software Corporation
Initial access: exploit_public_facing

During the incident: Took the MOVEit environment offline early on May 31, 2023
Applied vendor-recommended actions to address the previously unknown vulnerability
Notified and is cooperating with law enforcement
Engaged nationally recognized cybersecurity experts
Offering two years of complimentary credit monitoring, identity restoration, and fraud detection services through Experian
Changes made: Enhancing cybersecurity program to safeguard from cyber threats
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 12 weeks(87 days from discovery to filing)
Compliance flags: VT AG >45 bday
Discovery-date grounding: unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 11 filings · 11 states

View merged incident ↗

HHS OCRAug 4 · first

California State AG+14d

Indiana State AG+20d

Delaware State AG+21d

Washington State AG+21d

New Hampshire State AG+21d

Vermont State AG+21d · this page

Hawaii State AG+22d

Oregon State AG+25d

South Carolina State AG+25d

Idaho State AG+159d

Pattern: first filing Aug 4 (VA), last Jan 10 (ID) — a 159-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Cascade drawn from the first 10 linked disclosures of 17 — the full spread may be wider.

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://ago.vermont.gov/document/2023-08-25-maximus-progress-software-moveit-data-breach-notice-consumers
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 25, 2023
Raw hash: 3f7d09155ea10ff9def100c76ca1865aa645aa5293aa0a1c056c9cc89155342d

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityMAXIMUS, Inc.

Victim entityMAXIMUS, Inc.

Incidentdiscovered May 30, 2023

Stated responseTook the MOVEit environment offline early on May 31, 2023

ComplianceVT AG >45 bday

Extraction provenanceno artifact recorded

Source provenanceago.vermont.gov