HackingProfessional ServicesProfessional ServicesCustomer Data InvolvedGovernment IDIdentity (basic)HighContained

ERNST & YOUNG LLP

bd_8403dcd75972f36e · schema v1 · pii pii-v1

Severity

High

Discovered

May 31, 2023

Filed

Aug 9, 2023

To disclose

10 weeks

Affected · nationwide

30,210100 in this filing

Linked

15 filings

Confidence

65%

Full breach record for ERNST & YOUNG LLP →5 incidents on file

Ernst & Young LLP reported an external system breach (hacking) occurring between May 27 and May 31, 2023, discovered on May 31, 2023. The incident affected 30,210 individuals, including 100 Maine residents. Acquired data included names and driver's license numbers. Notification was sent electronically on August 9, 2023, and two years of identity theft protection services were provided by Experian.

J jump to incidentP pin to compareR raw source

Maine clockDiscovered May 31, 2023 → Filed with AG Aug 9, 202370d ⏱ ME AG >30d10 weeks 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 · 4 days

discovery → filing · 10 weeks / 70 days

May 27, 2023

Begins

May 31, 2023

Discovered

Aug 9, 2023

Filed

vs. sector median

9 wks faster

This filing is one of 15 about the same incident.View merged incident

Part of Progress Software Corporation supply-chain incident (2023) — a supply-chain cascade affecting multiple organizations.View cascade →

A leak claim by cl0p about this victim predates this filing by 47 days.View originating leak claim

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

California State AGbd_342a8e17707d445d2023-08-09Verified
Delaware State AGbd_51121ff37fe0619a2023-08-09Verified
Massachusetts State AGbd_6468994aed51a5192023-08-09Verified by operator
Indiana State AGbd_941fd2c5aa2026e22023-08-09Verified by operator

Show 6 more filings ↓up to 265d gap

Montana State AGbd_962a060b07cd01d62023-08-09Verified
Oregon State AGbd_43034954cfbe06cc2023-08-22 · +13dVerified
Indiana State AGbd_74745e5983f6eb6e2023-08-24 · +15dVerified by operator
South Carolina State AGbd_1a497359484fd3612023-08-28 · +19dVerified by operator
Massachusetts State AGbd_acdd5c6a642710682023-08-29 · +20dVerified by operator
New Hampshire State AGbd_d769d3dcc09c3cbc2024-04-30 · +265dVerified

Showing first 10 of 14 linked disclosures.

Name: ERNST & YOUNG LLP
norm: ernst young
Domain: ey.com

Name: ERNST & YOUNG LLP
norm: ernst young
Domain: ey.com
Industry: Professional Servicesllm

Discovered: May 31, 2023
Breach occurred: May 27, 2023 – May 31, 2023
Undetected for: 4 daysoccurrence → discovery
Materiality determined: —
Notification sent: Aug 9, 2023
Affected individuals: 30,210state + nationwide
Data types: Government IDIdentity (basic)
Data elements: Driver's licence number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing Application
Threat actor: External
Initial access: exploit_public_facing

During the incident: Sent electronic notification to affected individuals
Offered two years of identity theft protection services through Experian
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 10 weeks(70 days from discovery to filing)
Compliance flags: ME AG >30d · 70dLeak >30d
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 31, 2023
→ Filed with AG: Aug 9, 2023
70d 30 days (soft) ME AG >30d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: May 31, 2023 → Filed with AG: Aug 9, 2023	70d	30 days (soft)	ME AG >30d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 11 filings · 9 states

View merged incident ↗

California State AGAug 9 · first

Delaware State AGAug 9 · first

Massachusetts State AGAug 9 · first

Indiana State AGAug 9 · first

Montana State AGAug 9 · first

Maine State AGAug 9 · first · this page

Oregon State AG+13d

Indiana State AG+15d

South Carolina State AG+19d

Massachusetts State AG+20d

New Hampshire State AG+265d

Pattern: first filing Aug 9 (CA), last Apr 30 (NH) — a 265-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 14 — 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://www.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/c43aee1c-dbc4-4a6d-b0d1-147ad3b23c37.shtml
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 9, 2023
Raw hash: fda468223d2b5947eeaf6342310f097f8f26a49d556194f6297c314518e9cfac

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityERNST & YOUNG LLP

Victim entityERNST & YOUNG LLP

Incidentdiscovered May 31, 2023

Stated responseSent electronic notification to affected individuals

ComplianceME AG >30d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov