HackingTransportation & LogisticsTransportationData ExfiltratedEmployee Data InvolvedIdentity (basic)Government IDFinancial accountHealth (basic)PHIMediumContained

YELLOW CORPORATION

bd_02ca38c55dca0157 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Mar 27, 2025

Filed

Jun 26, 2026

To disclose

15 months

Affected

Not disclosed

Linked

9 filings

Confidence

65%

Full breach record for YELLOW CORPORATION →

Yellow Corporation identified suspicious activity and unauthorized access/exfiltration of files on its network on March 27, 2025. The incident affected historical data of former employees, including PII, government IDs, financial account numbers, and health information. Yellow engaged third-party specialists, contained the incident, and notified regulators and credit bureaus. Substitute notice was provided via website and media on June 26, 2026.

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Incident timeline

discovery → filing · 15 months / 456 days

Mar 27, 2025

Begins

Mar 27, 2025

Discovered

Jun 26, 2026

Filed

This filing is one of 9 filings about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (8) · sorted by filing gap

Massachusetts State AGbd_1b4409988dd125be2026-06-26Verified
Indiana State AGbd_25143fe3a8be2bc12026-06-26Verified
Nebraska State AGbd_47a170a06047880f2026-06-26Verified
California State AGbd_599e40dc7dee10872026-06-26Verified

Show 4 more filings ↓up to 25d gap

South Carolina State AGbd_c2e30e440f2ff96c2026-06-26Candidate
Texas State AGbd_d6742a202bfb3dfb2026-06-30 · +4dVerified
Oregon State AGbd_cd729262a7431f712026-07-08 · +12dVerified
Illinois State AGbd_040097e5b8b9a3032026-06-01 · +25dVerified

Name: Yellow Corporation
norm: yellow
Domain: www.myyellow.com

Name: YELLOW CORPORATION
norm: yellow
Domain: www.myyellow.com
Industry: Transportation & Logisticsllm

Discovered: Mar 27, 2025
Breach occurred: Mar 27, 2025
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jun 26, 2026
Affected individuals: Not disclosed
Data types: Identity (basic)Government IDFinancial accountHealth (basic)PHI
Data elements: Social Security numberDate of birthMedical information
Attack vector: Unauthorized Access
MITRE ATT&CK: T1041 Exfiltration Over C2 Channel
Threat actor: External
Regulator citations: Providing written notice of this incident to relevant state regulators, as necessary

During the incident: Identified suspicious activity on its computer network
Promptly took steps to start an investigation
Secure its network
Restore its network from backups
Worked to investigate what occurred
Assess the security of its systems
Identify potentially affected individuals
Engaged third-party cybersecurity specialists
Briefly took the systems offline
Securely restored them from backups
Undertook a comprehensive review of the files to determine what information was contained in them
Providing access to credit monitoring services for one (1) year, through TransUnion
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
Notified the three major credit reporting agencies, Equifax, Experian, and TransUnion
Changes made: Evaluating additional technical security measures and processes to reduce the risk of an issue like this reoccurring
Implementing additional technical safeguards to mitigate the reoccurrence of this type of event
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 15 months(456 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 9 filings · 9 states

View merged incident ↗

Illinois State AGJun 1 · first

Massachusetts State AG+25d

Indiana State AG+25d

Nebraska State AG+25d

California State AG+25d

South Carolina State AG+25d

New Hampshire State AG+25d · this page

Texas State AG+29d

Oregon State AG+37d

Pattern: first filing Jun 1 (IL), last Jul 8 (OR) — a 37-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://mm.nh.gov/files/uploads/doj/remote-docs/yellow-corporation-20260626.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jun 26, 2026
Raw hash: ae671edbdf512803ace39a49ddd0cd9a4ac0e1177160f7bbb3008c685e833175

Linked disclosures

Regulatory filings (8) · sorted by filing gap

Reporting entityYellow Corporation

Victim entityYELLOW CORPORATION

Incidentdiscovered Mar 27, 2025

Stated responseIdentified suspicious activity on its computer network

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov