MalwareTransportation & LogisticsTransportationRansomwareCapture Stored DataData ExfiltratedData EncryptedCustomer Data InvolvedPIIIdentity (basic)Government IDFinancial accountMediumContained

Estes Express Lines

bd_c81da27f4e5ac9a0 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Oct 1, 2023

Filed

Dec 31, 2023

To disclose

13 weeks

Affected

Not disclosed

Linked

6 filings

Confidence

66%

Full breach record for Estes Express Lines →2 incidents on file

Estes Express Lines experienced a ransomware attack on September 26, 2023, discovered on October 1, 2023. An unauthorized threat actor accessed the IT network, deployed ransomware, and exfiltrated data including names, addresses, SSNs, and bank account information. The company engaged forensic investigators, notified the FBI, contained the threat, and offered 12 months of identity monitoring via Kroll. No ransom was paid.

J jump to incidentP pin to compareR raw source

Leak gap clock⏱ Leak >30d13 weeks discovery → filing

Incident timeline

undetected · 5 days

discovery → filing · 13 weeks / 91 days

Sep 26, 2023

Begins

Oct 1, 2023

Discovered

Dec 31, 2023

Filed

This filing is one of 6 about the same incident.View merged incident

A leak claim by lockbit_3 about this victim predates this filing by 90 days.View originating leak claim

Linked disclosures

Why this link?

Regulatory filings (5) · sorted by filing gap

Maine State AGbd_c37017dcce54a7a92023-12-31Verified
Indiana State AGbd_dc7acd3bd675249c2023-12-05 · +26dVerified
Vermont State AGbd_f46705b840aae4762023-12-04 · +27dVerified
Montana State AGbd_5b50f6cebbb7f4772023-12-01 · +30dVerified

Show 1 more filing ↓up to 364d gap

Illinois State AGbd_8133543266aa118c2023-01-01 · +364dCandidate

Name: Estes Express Lines
norm: estes express lines
Domain: estes-express.com

Name: Estes Express Lines
norm: estes express lines
Domain: estes-express.com
Industry: Transportation & Logisticsllm

Discovered: Oct 1, 2023
Breach occurred: Sep 26, 2023
Undetected for: 5 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: Not disclosed
Data types: PIIIdentity (basic)Government IDFinancial account
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Notified and cooperating with the FBI

During the incident: Engaged its incident response team, including a world-class third-party forensics, cybersecurity and recovery firm
Notified and cooperating with the FBI regarding the incident
Successfully locking out the unauthorized threat actor from the Company’s system
Undertaking a full forensic investigation of the incident
Remediate the malware and harden the Company’s IT systems
Secured the services of Kroll to provide identity monitoring at no cost to you for 12 months
Changes made: Remediate the malware
Harden the Company’s IT systems
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 13 weeks(91 days from discovery to filing)
Compliance flags: Leak >30d
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 · 6 filings · 6 states

View merged incident ↗

Illinois State AGJan 1 · first

Montana State AG+334d

Vermont State AG+337d

Indiana State AG+338d

Maine State AG+364d

California State AG+364d · this page

Pattern: first filing Jan 1 (IL), last Dec 31 (CA) — a 364-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.ca.gov/ecrime/databreach/reports/sb24-578650
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 31, 2023
Raw hash: c6c599407e1c23ff065c61e5a42aaaf5f5666817978da553c8c50ec9e87b8a7c

Linked disclosures

Regulatory filings (5) · sorted by filing gap

Reporting entityEstes Express Lines

Victim entityEstes Express Lines

Incidentdiscovered Oct 1, 2023

Stated responseEngaged its incident response team, including a world-class third-party forensics, cybersecurity and recovery firm

ComplianceLeak >30d

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov