HackingProfessional ServicesProfessional ServicesVulnerability ExploitCapture Stored DataSupply Chain (3P Vendor)Data ExfiltratedCustomer Data InvolvedPIIIdentity (basic)LowContained

MAXIMUS, Inc.

bd_bf25ea19ea12a124 · schema v1 · pii pii-v1

Severity

Low

Discovered

May 30, 2023

Filed

Aug 18, 2023

To disclose

11 weeks

Affected

Not disclosed

Linked

17 filings

Confidence

64%

Full breach record for MAXIMUS, Inc. →7 incidents on file

Maximus Human Services, Inc. disclosed that an unauthorized party exploited a previously unknown vulnerability in Progress Software's MOVEit Transfer application to access files containing personal information. The incident occurred between May 27 and May 31, 2023, and was detected on May 30, 2023. Maximus took the application offline, applied patches, engaged forensic experts, and notified law enforcement. Affected individuals are offered two years of credit monitoring and identity restoration services.

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Incident timeline

undetected · 3 days

discovery → filing · 11 weeks / 80 days

May 27, 2023

Begins

May 30, 2023

Discovered

Aug 18, 2023

Filed

vs. sector median

7 wks faster

This filing is one of 17 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

Indiana State AGbd_45d3fdf48f1c933d2023-08-24 · +6dVerified by operator
Vermont State AGbd_67d6131ab83daa012023-08-25 · +7dVerified by operator
Delaware State AGbd_97027e573fc51e132023-08-25 · +7dVerified by operator
Washington State AGbd_d4deac1eb085d27a2023-08-25 · +7dVerified

Show 6 more filings ↓up to 145d gap

New Hampshire State AGbd_fe9387821fda92642023-08-25 · +7dVerified by operator
Hawaii State AGbd_d3d3db6e2dd7a7a82023-08-26 · +8dVerified by operator
Oregon State AGbd_4a2584ab84dfe0f12023-08-29 · +11dVerified by operator
South Carolina State AGbd_a90da3e7c4e0509c2023-08-29 · +11dVerified
HHS OCRbd_dedafa3bd216907a2023-08-04 · +14dVerified
Idaho State AGbd_5312733f463970a32024-01-10 · +145dVerified by operator

Showing first 10 of 16 linked disclosures.

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

Name: MAXIMUS, Inc.
norm: maximus
Domain: maximus.com
Industry: Professional Servicesllm

Discovered: May 30, 2023
Breach occurred: May 27, 2023 – May 31, 2023
Undetected for: 3 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: Not disclosed
Data types: PIIIdentity (basic)
Attack vector: Third-Party / Supply Chain
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1195 Supply Chain CompromiseT1041 Exfiltration Over C2 Channel
Threat actor: External
Third party: via Progress Software Corporation
Initial access: supply_chain

During the incident: Took its MOVEit application offline
Applied vendor recommended actions, including applying new patches made available by Progress
Engaged a forensic investigation firm and a data analysis firm to identify affected individuals and the types of information involved
Notified and is cooperating with law enforcement
Offering two years of complimentary credit monitoring, identity restoration, and fraud detection services through Experian
Changes made: Enhance our cybersecurity posture to safeguard against ever evolving cyber threats
Monitor for unusual activity and vulnerabilities
Apply vendor recommended actions as applicable
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 11 weeks(80 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

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 · this page

Indiana State AG+20d

Vermont State AG+21d

Delaware State AG+21d

Washington State AG+21d

New Hampshire State AG+21d

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 16 — 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://oag.ca.gov/ecrime/databreach/reports/sb24-572076
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 18, 2023
Raw hash: 729b6219b06307c5c515b38a3683b8f5da764d234c8a0c839f8c560560500b29

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityMAXIMUS, Inc.

Victim entityMAXIMUS, Inc.

Incidentdiscovered May 30, 2023

Stated responseTook its MOVEit application offline

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov