HackingFinancial ServicesFinanceData MishandlingCustomer Data InvolvedIdentity (basic)Government IDFinancial accountMediumContained

Ally Bank

bd_6057fe9e2178f07d · schema v1 · pii pii-v2

Severity

Medium

Discovered

May 20, 2025

Filed

Jun 17, 2025

To disclose

—

Affected

Not disclosed

Confidence

66%

Full breach record for Ally Bank →18 incidents on file

Ally Bank notified Nebraska residents of a data breach occurring on May 20, 2025, where an unauthorized party accessed a vendor's system containing customer names, SSNs, addresses, and auto account numbers. Ally engaged forensic investigators, secured the vendor's systems, and provided three years of ID theft services via Sontiq/TransUnion to affected individuals.

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Incident timeline

May 20, 2025

Discovered

Jun 17, 2025

Filed

Tracked as a single-filing incident — the only disclosure on record for this event so far.ConfirmedView incident

Name: Ally Bank
norm: ally bank
Domain: ally.com

Name: Ally Bank
norm: ally bank
Domain: ally.com
Industry: Financial Servicesllm

Discovered: May 20, 2025
Materiality determined: —
Notification sent: Jun 18, 2025
Affected individuals: Not disclosed
Data types: Identity (basic)Government IDFinancial account
Attack vector: Third-Party / Supply Chain
MITRE ATT&CK: T1195 Supply Chain Compromise
Threat actor: External
Initial access: supply_chain

During the incident: Investigated the matter
Vendor engaged a computer forensics firm
Confirmed the unauthorized party was removed from the system
Implemented supplemental fraud monitoring and controls
Engaged Sontiq, a TransUnion Company at our expense, to provide you with world class ID Theft services
Changes made: Vendor took steps to secure the impacted systems
Implemented supplemental fraud monitoring and controls to detect and prevent unauthorized activity on your Ally account(s)
Source: Quoted from the filing itself, not independently verified.

Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

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://nebraska.gov/ago/data-breach/documents/90cf02ce-83c2-4ccc-97e6-55e280356be3.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jun 17, 2025
Raw hash: 65cfc515380fef737c79b34a1c8ea7f4dd981d118ea9311bfd85fa6b295a4aac

Reporting entityAlly Bank

Victim entityAlly Bank

Incidentdiscovered May 20, 2025

Stated responseInvestigated the matter

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancenebraska.gov