HackingRetail & ConsumerRetailStolen CredentialsData ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDFinancial accountMediumContained

AutoNation, Inc.

bd_c158c2a75bf30f3e · schema v1 · pii pii-v1

Severity

Medium

Discovered

May 20, 2024

Filed

Mar 4, 2025

To disclose

41 weeks

Affected

299state residents only

Linked

4 filings

Confidence

66%

Full breach record for AutoNation, Inc. →4 incidents on file

CrossCheck, Inc. reported a cybersecurity incident affecting AutoNation, Inc. customers. Between May 18-20, 2024, an unauthorized actor accessed CrossCheck's merchant portal, potentially exposing names, driver's license numbers, and financial account information of 299 Maryland residents. CrossCheck notified federal law enforcement, provided 12 months of credit monitoring via Experian, and implemented additional employee safeguards. Notification to the Maryland Attorney General was filed on March 4, 2025.

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Maryland clock✗ MD AG >90d41 weeks discovery → filing

Incident timeline

undetected · 2 days

discovery → filing · 41 weeks / 288 days

May 18, 2024

Begins

May 20, 2024

Discovered

Mar 4, 2025

Filed

vs. sector median

+34 wks slower

This filing is one of 4 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (3) · sorted by filing gap

Nebraska State AGbd_11c3ad79193326872025-03-04Verified
Maine State AGbd_bcb09ac65f4f2fcb2025-03-04Verified
Montana State AGbd_02c1dec26ae275ca2024-12-19 · +75dCandidate

Name: CrossCheck, Inc.
norm: crosscheck

Name: AutoNation, Inc.
norm: autonation
Domain: autonation.com
Industry: retail_consumer
Industry: Retail & Consumerllm

Discovered: May 20, 2024
Breach occurred: May 18, 2024 – May 20, 2024
Undetected for: 2 daysoccurrence → discovery
Materiality determined: —
Notification sent: Mar 4, 2025
Affected individuals: 299state-resident count only
Data types: Identity (basic)Government IDFinancial account
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing Application
Threat actor: External
Regulator citations: Providing written notice of this incident to relevant state regulators, as necessary
Initial access: exploit_public_facing

During the incident: Notified federal law enforcement regarding the event
Providing access to credit monitoring services for twelve (12) months, through Experian, to individuals whose personal information was potentially affected by this incident, at no cost to these individuals
Providing impacted individuals with guidance on how to better protect against identity theft and fraud
Providing written notice of this incident to relevant state regulators, as necessary, and to the three major credit reporting agencies, Equifax, Experian, and TransUnion
Changes made: Working to implement additional safeguards and training to its employees
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 41 weeks(288 days from discovery to filing)
Compliance flags: MD AG >90d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 4 filings · 4 states

View merged incident ↗

Montana State AGDec 19 · first

Nebraska State AG+75d

Maine State AG+75d

Maryland State AG+75d · this page

Pattern: first filing Dec 19 (MT), last Mar 4 (MD) — a 75-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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://oag.maryland.gov/resources-info/SBN%20Documents/2025/ITU-376502.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 4, 2025
Raw hash: ee91c248a20858e9cd8c2e981e82cc8d16a19bb136ef9785260736a9d4df73bc

Linked disclosures

Regulatory filings (3) · sorted by filing gap

Reporting entityCrossCheck, Inc.

Victim entityAutoNation, Inc.

Incidentdiscovered May 20, 2024

Stated responseNotified federal law enforcement regarding the event

ComplianceMD AG >90d

Extraction provenanceno artifact recorded

Source provenanceoag.maryland.gov