HackingTechnologyHealthcareInformationStolen CredentialsCustomer Data InvolvedEmployee Data InvolvedIdentity (basic)Government IDFinancial accountHealth (basic)EmploymentMediumActive

HENRY SCHEIN, INC.

bd_6c3ca5d013cd7be2 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Oct 14, 2023

Filed

Nov 17, 2023

To disclose

5 weeks

Affected

445state residents only

Linked

9 filings

Confidence

63%

Full breach record for HENRY SCHEIN, INC. →6 incidents on file

Henry Schein, Inc. notified Montana employees of a cybersecurity incident discovered on October 14, 2023, involving unauthorized access to employee personal information. Impacted data included names, SSNs, financial, and health data. The company engaged forensic experts, notified law enforcement, and provided 24 months of Experian IdentityWorks monitoring. Investigation was ongoing at the time of notification.

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Incident timeline

discovery → filing · 5 weeks / 34 days

Oct 14, 2023

Discovered

Nov 17, 2023

Filed

vs. sector median

14 wks faster

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

Linked disclosures

Why this link?

Regulatory filings (8) · sorted by filing gap

Vermont State AGbd_cc87b9a5cdf301c12023-11-17Verified
SEC 8-Kbd_838851b9407ab0032023-11-16 · +1dVerified
New Hampshire State AGbd_ad54e6e188668b372023-11-16 · +1dVerified
South Carolina State AGbd_e6ff33d71b709e982023-11-28 · +11dVerified

Show 4 more filings ↓up to 70d gap

California State AGbd_4b1727b048fdc8552023-12-06 · +19dVerified
Maine State AGbd_817f39c882aae4e02023-12-06 · +19dVerified
Massachusetts State AGbd_9a93e1de11d7d9732023-12-06 · +19dVerified
Washington State AGbd_72816974130743b62024-01-26 · +70dVerified

Name: HENRY SCHEIN, INC.
norm: henry schein
Domain: henryschein.com

Name: HENRY SCHEIN, INC.
norm: henry schein
Domain: henryschein.com
Industry: TechnologyllmHealthcarellm

Discovered: Oct 14, 2023
Materiality determined: —
Notification sent: Nov 17, 2023
Affected individuals: 445state-resident count only
Data types: Identity (basic)Government IDFinancial accountHealth (basic)Employment
Data elements: Social Security numberDate of birthMedical information
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Regulator citations: notified relevant law enforcement authorities
Initial access: valid_credentials

During the incident: Taking certain systems offline
Notified relevant law enforcement authorities
Engaged outside cybersecurity and forensic information technology experts
Conducting an investigation to identify and remove any malicious files
Providing identity theft detection and resolution tools through Experian
Changes made: Seeking to implement measures to fortify our defenses going forward
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 5 weeks(34 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 · 8 states

View merged incident ↗

SEC 8-KNov 16 · first

New Hampshire State AGNov 16 · first

Vermont State AG+1d

Montana State AG+1d · this page

South Carolina State AG+12d

California State AG+20d

Maine State AG+20d

Massachusetts State AG+20d

Washington State AG+71d

Pattern: first filing Nov 16, last Jan 26 (WA) — a 71-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://dojmt.gov/wp-content/uploads/OCP/Consumer-notification-letter-865.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Nov 17, 2023
Raw hash: 220ea14fce85b778d06587e8f2718ce1f94401db9f512c86828621874dd6efba

Linked disclosures

Regulatory filings (8) · sorted by filing gap

Reporting entityHENRY SCHEIN, INC.

Victim entityHENRY SCHEIN, INC.

Incidentdiscovered Oct 14, 2023

Stated responseTaking certain systems offline

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov