HackingOtherCustomer Data InvolvedEmployee Data InvolvedIdentity (basic)Government IDHealth (basic)HighContained

MWI Veterinary Supply, Inc.

bd_881516599e930adb · schema v1 · pii pii-v1

Severity

High

Discovered

Sep 30, 2024

Filed

Nov 4, 2024

To disclose

5 weeks

Affected · nationwide

19,20713 in this filing

Linked

7 filings

Confidence

66%

Full breach record for MWI Veterinary Supply, Inc. →2 incidents on file

MWI Veterinary Supply, Inc. reported an external system breach (hacking) occurring on February 21, 2024, discovered on September 30, 2024. The incident affected 19,207 individuals, including 13 Maine residents. Compromised data included names, addresses, SSNs, driver's license info, DOB, and health insurance info. The incident is contained; the company engaged law enforcement and cybersecurity experts and offered 24 months of credit monitoring.

J jump to incidentP pin to compareR raw source

Leak gap clock✗ Leak >180d5 weeks discovery → filing

⚠ AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Incident timeline

undetected · 222 days

discovery → filing · 5 weeks / 35 days

Feb 21, 2024

Begins

Sep 30, 2024

Discovered

Nov 4, 2024

Filed

vs. sector median

3 wks faster

This filing is one of 7 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (6) · sorted by filing gap

Vermont State AGbd_106866268166cc202024-11-04Verified
Indiana State AGbd_417cec55efa00f862024-11-04Verified
Massachusetts State AGbd_c165b2aa6399e4402024-11-04Verified
Montana State AGbd_c607081831255b902024-11-04Candidate

Show 2 more filings ↓up to 8d gap

California State AGbd_e02a7dd25f3a11812024-11-04Verified
New Hampshire State AGbd_68374ced74ce1a742024-11-12 · +8dVerified

Name: MWI Veterinary Supply, Inc.
norm: mwi veterinary supply

Name: MWI Veterinary Supply, Inc.
norm: mwi veterinary supply
Industry: Otherllm

Discovered: Sep 30, 2024
Breach occurred: Feb 21, 2024
Undetected for: 222 daysoccurrence → discovery
Materiality determined: —
Notification sent: Nov 4, 2024
Affected individuals: 19,207state + nationwide
Data types: Identity (basic)Government IDHealth (basic)
Data elements: Social Security numberDate of birth
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing Application
Threat actor: ExternalFinancial
Regulator citations: Notified Maine Attorney General
Initial access: exploit_public_facing

During the incident: Launched an investigation with the assistance of cybersecurity experts, law enforcement, and outside lawyers
Provided access to Experian IdentityWorks credit monitoring and remediation services for 24 months
Changes made: Working with cybersecurity experts to reinforce systems and information security protocols
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 5 weeks(35 days from discovery to filing)
Compliance flags: Leak >180dME AG >30d · 35d
Discovery-date grounding: AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.
Clock breakdown: Statute Window Elapsed Threshold Status
Maine
Discovered: Sep 30, 2024
→ Filed with AG: Nov 4, 2024
35d 30 days (soft) ME AG >30d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Sep 30, 2024 → Filed with AG: Nov 4, 2024	35d	30 days (soft)	ME AG >30d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 7 filings · 7 states

View merged incident ↗

Vermont State AGNov 4 · first

Indiana State AGNov 4 · first

Massachusetts State AGNov 4 · first

Montana State AGNov 4 · first

California State AGNov 4 · first

Maine State AGNov 4 · first · this page

New Hampshire State AG+8d

Pattern: first filing Nov 4 (VT), last Nov 12 (NH) — a 8-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://www.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/33072372-c2a1-4294-8831-f8f02cb26cc5.html
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Nov 4, 2024
Raw hash: 5262c6688f9c588c2e391fcd92638d32d98e2c7aa970ddc413873c14c147f552

Linked disclosures

Regulatory filings (6) · sorted by filing gap

Reporting entityMWI Veterinary Supply, Inc.

Victim entityMWI Veterinary Supply, Inc.

Incidentdiscovered Sep 30, 2024

Stated responseLaunched an investigation with the assistance of cybersecurity experts, law enforcement, and outside lawyers

ComplianceLeak >180d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov