HackingProfessional ServicesProfessional ServicesStolen CredentialsSupply Chain (3P Vendor)Data ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDFinancial accountHighContained

ERNST & YOUNG LLP

bd_51121ff37fe0619a · schema v1 · pii pii-v1

Severity

High

Discovered

—

Filed

Aug 9, 2023

To disclose

—

Affected

2,408state residents only

Linked

15 filings

Confidence

67%

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

Ernst & Young LLP (EY US) notified the Delaware Attorney General on August 30, 2023, of a security incident involving its third-party supplier, Progress Software. A vulnerability in Progress Software's MOVEit Transfer file transfer solution compromised files containing personal data of 2,408 Delaware residents. Data potentially exposed includes names, addresses, financial account information, credit/debit card numbers, Social Security numbers, and government-issued IDs. EY US began mailing notifications on August 9, 2023, and offered 24 months of credit monitoring via Experian. Bank of America, an EY client, was not impacted.

J jump to incidentP pin to compareR raw source

Leak gap clock⏱ Leak >30d

⚠ no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.

Incident timeline — partial

? — ?

Breach window unknown

Aug 9, 2023

Filed

—

Corroborated · see linked filings

Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.

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
Massachusetts State AGbd_6468994aed51a5192023-08-09Verified by operator
Maine State AGbd_8403dcd75972f36e2023-08-09Verified
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: —
Materiality determined: —
Notification sent: Aug 9, 2023
Affected individuals: 2,408state-resident count only
Data types: Identity (basic)Government IDFinancial account
Data elements: Social Security number
Attack vector: Third-Party / Supply Chain
MITRE ATT&CK: T1195 Supply Chain Compromise
Threat actor: External
Regulator citations: Notified Delaware Attorney General
Third party: via Progress Software
Initial access: supply_chain

During the incident: Launched an investigation
Took steps to secure its systems
Working with third-party security experts to investigate the scope of the issue and advise on its response
Notifying individuals whose personal information may have been accessed
Began mailing notifications on August 9, 2023
Established a call center to answer consumers’ questions
Changes made: Offering 24-month complimentary subscription to Experian’s credit monitoring and identity theft restoration services
Source: Quoted from the filing itself, not independently verified.

Compliance flags: Leak >30d
Discovery-date grounding: no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 11 filings · 9 states

View merged incident ↗

California State AGAug 9 · first

Massachusetts State AGAug 9 · first

Maine State AGAug 9 · first

Indiana State AGAug 9 · first

Montana State AGAug 9 · first

Delaware 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://attorneygeneral.delaware.gov/wp-content/uploads/sites/50/2023/09/2023-08-30-EY-US-notice-to-DE-AG.pdf
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: bd595d2950f0327a6c7dba46f01ea4ccac2fd514ed9f073dc1c7d494b498f2e0

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityERNST & YOUNG LLP

Victim entityERNST & YOUNG LLP

IncidentThird-Party / Supply Chain

Stated responseLaunched an investigation

ComplianceLeak >30d

Extraction provenanceno artifact recorded

Source provenanceattorneygeneral.delaware.gov