HackingTransportation & LogisticsTransportationTargetedData ExfiltratedIdentity (basic)Government IDPIIMediumResolved

WestJet, an Alberta Partnership

bd_a368060b3708eac5 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Jun 13, 2025

Filed

Sep 29, 2025

To disclose

15 weeks

Affected

Not disclosed

Linked

14 filings

Confidence

67%

Full breach record for WestJet, an Alberta Partnership →

WestJet, an Alberta Partnership, disclosed a cybersecurity incident identified on June 13, 2025, involving unauthorized access by a sophisticated criminal third party. The incident affected personal information of US residents, including names, dates of birth, mailing addresses, and travel document details. WestJet reported the incident to the FBI and is cooperating. The incident is resolved. WestJet offers 24 months of complimentary identity theft monitoring via TransUnion.

J jump to incidentP pin to compareR raw source

Vermont clock✗ VT AG >45 bday15 weeks discovery → filing

⚠ unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Incident timeline

discovery → filing · 15 weeks / 108 days

Jun 13, 2025

Discovered

Sep 29, 2025

Filed

This filing is one of 14 filings about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

Indiana State AGbd_08b8ad67ebdf12712025-09-29Verified
South Carolina State AGbd_21b3fba3dd8e7bd92025-09-29Verified
Montana State AGbd_46b2ae93fc4dc8f22025-09-29Candidate
New Hampshire State AGbd_6a4e87d06919f5df2025-09-29Verified

Show 6 more filings ↓up to 8d gap

California State AGbd_078db9afda69701f2025-09-30 · +1dVerified
Maine State AGbd_d8c21e8e887f55602025-09-30 · +1dVerified
Oregon State AGbd_0dd2d099a5ac7f742025-10-03 · +4dVerified
Washington State AGbd_75d83581529d1d882025-10-03 · +4dVerified
Massachusetts State AGbd_7cf756e8a180c7a72025-10-04 · +5dVerified
Texas State AGbd_4405e7fd2d88d7fb2025-10-07 · +8dVerified

Showing first 10 of 13 linked disclosures.

Name: WestJet, an Alberta Partnership
norm: westjet an alberta partnership
Domain: westjet.com

Name: WestJet, an Alberta Partnership
norm: westjet an alberta partnership
Domain: westjet.com
Industry: Transportation & Logisticsllm

Discovered: Jun 13, 2025
Materiality determined: —
Notification sent: Sep 29, 2025
Affected individuals: Not disclosed
Data types: Identity (basic)Government IDPII
Data elements: Date of birth
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: Notified law enforcement, including the Federal Bureau of Investigation
Initial access: exploit_public_facing

During the incident: Reported the incident to law enforcement, including the Federal Bureau of Investigation
Cooperating in their investigation
Offering an identity theft and monitoring solution free of charge for 24 months
Changes made: Took immediate steps to secure our environment
Examined our system to minimize the risk of a similar incident occurring in the future
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 15 weeks(108 days from discovery to filing)
Compliance flags: VT AG >45 bday
Discovery-date grounding: unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 11 filings · 11 states

View merged incident ↗

Indiana State AGSep 29 · first

South Carolina State AGSep 29 · first

Montana State AGSep 29 · first

New Hampshire State AGSep 29 · first

Vermont State AGSep 29 · first · this page

California State AG+1d

Maine State AG+1d

Oregon State AG+4d

Washington State AG+4d

Massachusetts State AG+5d

Texas State AG+8d

Pattern: first filing Sep 29 (IN), last Oct 7 (TX) — a 8-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Cascade drawn from the first 10 linked disclosures of 13 — the full spread may be wider.

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://ago.vermont.gov/document/2025-09-29-westjet-data-breach-notice-consumers
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 29, 2025
Raw hash: b4f7ba3a03fd6a6d3266aa72604373d2b9289a171fe6b63f7c951790541ccf70

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityWestJet, an Alberta Partnership

Victim entityWestJet, an Alberta Partnership

Incidentdiscovered Jun 13, 2025

Stated responseReported the incident to law enforcement, including the Federal Bureau of Investigation

ComplianceVT AG >45 bday

Extraction provenanceno artifact recorded

Source provenanceago.vermont.gov