HackingProfessional ServicesProfessional ServicesVulnerability ExploitSupply Chain (3P Vendor)Data ExfiltratedIdentity (basic)Government IDFinancial accountHighContained

ERNST & YOUNG LLP

bd_1a497359484fd361 · schema v1 · pii pii-v1

Severity

High

Discovered

May 31, 2023

Filed

Aug 28, 2023

To disclose

13 weeks

Affected

3,037state residents only

Linked

15 filings

Confidence

66%

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

Ernst & Young LLP (EY) notified South Carolina residents of a data breach involving its third-party supplier, Progress Software Corporation. A security vulnerability in the supplier's MOVEit Transfer solution compromised personal data of EY clients. Data potentially included names, addresses, financial account info, credit/debit card numbers, SSNs, and government IDs. EY engaged third-party security experts and Bank of America (EY's client) is providing two years of identity theft protection via Experian.

J jump to incidentP pin to compareR raw source

Leak gap clock⏱ Leak >30d13 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

discovery → filing · 13 weeks / 89 days

May 31, 2023

Discovered

Aug 28, 2023

Filed

vs. sector median

6 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 66 days.View originating leak claim

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

Massachusetts State AGbd_acdd5c6a642710682023-08-29 · +1dVerified by operator
Indiana State AGbd_74745e5983f6eb6e2023-08-24 · +4dVerified by operator
Oregon State AGbd_43034954cfbe06cc2023-08-22 · +6dVerified
California State AGbd_342a8e17707d445d2023-08-09 · +19dVerified

Show 6 more filings ↓up to 246d gap

Delaware State AGbd_51121ff37fe0619a2023-08-09 · +19dVerified
Massachusetts State AGbd_6468994aed51a5192023-08-09 · +19dVerified by operator
Maine State AGbd_8403dcd75972f36e2023-08-09 · +19dVerified
Indiana State AGbd_941fd2c5aa2026e22023-08-09 · +19dVerified by operator
Montana State AGbd_962a060b07cd01d62023-08-09 · +19dVerified
New Hampshire State AGbd_d769d3dcc09c3cbc2024-04-30 · +246dVerified

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
Materiality determined: —
Notification sent: Aug 28, 2023
Affected individuals: 3,037state-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 CompromiseT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Initial access: supply_chain

During the incident: Launched an investigation
Took steps to secure our systems
Working with third-party security experts to investigate the scope of the issue and advise on our response
Changes made: Notifying affected individuals
Offering complimentary two-year membership in an identity theft protection service provided by Experian identityWorks
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 13 weeks(89 days from discovery to filing)
Compliance flags: Leak >30dSC CRA notice due
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 · 9 states

View merged incident ↗

California State AGAug 9 · first

Delaware State AGAug 9 · first

Massachusetts State AGAug 9 · first

Maine State AGAug 9 · first

Indiana State AGAug 9 · first

Montana State AGAug 9 · first

Oregon State AG+13d

Indiana State AG+15d

South Carolina State AG+19d · this page

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://consumer.sc.gov/sites/consumer/files/Documents/Security%20Breach%20Notices/Ernst%26YoungLLC.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 28, 2023
Raw hash: 3afb9584177c95996795d4cb685fa95ceedfca3337f6d161d08b13f30eb36923

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityERNST & YOUNG LLP

Victim entityERNST & YOUNG LLP

Incidentdiscovered May 31, 2023

Stated responseLaunched an investigation

ComplianceLeak >30d

Extraction provenanceno artifact recorded

Source provenanceconsumer.sc.gov