MisuseFinancial ServicesFinancePrivilege AbuseCustomer Data InvolvedTargetedIdentity (basic)Government IDFinancial accountCredentialsAuthenticationMediumContained

ALLY

bd_4b310f9b1fc267c8 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Sep 19, 2024

Filed

Nov 12, 2024

To disclose

8 weeks

Affected

2state residents only

Confidence

66%

Full breach record for ALLY →4 incidents on file

Ally notified Montana residents of a data breach on November 12, 2024, discovered September 19, 2024. A vendor call center agent accessed customer deposit account information, including SSNs, bank account numbers, and credentials, outside their job scope. Ally provided credit monitoring and reset credentials.

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Incident timeline

discovery → filing · 8 weeks / 54 days

Sep 19, 2024

Discovered

Nov 12, 2024

Filed

vs. sector median

on median

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed2 affectedView incident

Name: ALLY
norm: ally
Domain: ally.com

Name: ALLY
norm: ally
Domain: ally.com
Industry: Financial Servicesllm

Discovered: Sep 19, 2024
Materiality determined: —
Notification sent: Nov 12, 2024
Affected individuals: 2state-resident count only
Data types: Identity (basic)Government IDFinancial accountCredentialsAuthentication
Data elements: Social Security numberDate of birth
Attack vector: Insider
MITRE ATT&CK: T1078 Valid AccountsT1119 Automated Collection
Threat actor: Internal
Initial access: insider_action

During the incident: Engaged Sontiq, a TransUnion Company, to provide ID Theft services
Implemented supplemental fraud monitoring
Contacted affected individuals to reset log in credentials
Issued new account numbers, checks, and affiliated cards
Changes made: Implemented supplemental fraud monitoring
Reset log in credentials
Issued new account numbers, checks, and affiliated cards
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 8 weeks(54 days from discovery to filing)
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://dojmt.gov/wp-content/uploads/2025/01/Consumer-notification-letter-14.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Nov 12, 2024
Raw hash: e888bfcf273e451e919e4b1292a6ec4bdced4c403e14fe066533ceb0b070833d

Reporting entityALLY

Victim entityALLY

Incidentdiscovered Sep 19, 2024

Stated responseEngaged Sontiq, a TransUnion Company, to provide ID Theft services

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov