HackingHealthcareHealthcareVulnerability ExploitCapture Stored DataData ExfiltratedTargetedSupply Chain (3P Vendor)Identity (basic)Government IDEmploymentHighContained

BRISTOL-MYERS SQUIBB COMPANY

bd_c7f73efea8f4322f · schema v1 · pii pii-v1

Severity

High

Discovered

May 31, 2023

Filed

Jun 30, 2023

To disclose

4 weeks

Affected

2,231state residents only

Linked

4 filings

Confidence

69%

Full breach record for BRISTOL-MYERS SQUIBB COMPANY →7 incidents on file

Bristol Myers Squibb disclosed a cybersecurity incident involving the MOVEit SFTP tool, a third-party vendor product. Unauthorized access occurred as early as May 27, 2023, discovered on May 31, 2023. The breach affected up to 2,231 Washington residents, exposing names, DOBs, contact details, employment status, and SSNs for 45 individuals. Notices were sent starting June 29, 2023, offering 24 months of credit monitoring.

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Washington clock✓ WA AG ≤30d4 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 · 4 days

discovery → filing · 4 weeks / 30 days

May 27, 2023

Begins

May 31, 2023

Discovered

Jun 30, 2023

Filed

vs. sector median

8 wks faster

This filing is one of 4 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (3) · sorted by filing gap

Montana State AGbd_27d9a6315eb19d822023-06-29 · +1dVerified
New Hampshire State AGbd_333dbf505a7fad0d2023-07-03 · +3dVerified
Massachusetts State AGbd_fd0e0b317e579e4b2023-07-05 · +5dVerified

Name: BRISTOL-MYERS SQUIBB COMPANY
norm: bristol myers squibb
Domain: bms.com

Name: BRISTOL-MYERS SQUIBB COMPANY
norm: bristol myers squibb
Domain: bms.com
Industry: Healthcarellm

Discovered: May 31, 2023
Breach occurred: May 27, 2023
Undetected for: 4 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jun 29, 2023
Affected individuals: 2,231state-resident count only
Data types: Identity (basic)Government IDEmployment
Data elements: NameSocial Security numberDate of birth
WA-stated cause: Cyberattack
WA-stated duration: lifecycle Unknowndexposure Unknownd
WA-stated discovery: Found after the fact
Attack vector: Third-Party / Supply Chain
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Notified data protection authorities, where applicable
Third party: via Progress Software Corporation
Initial access: exploit_public_facing

During the incident: Initiated an investigation with the assistance of third-party cybersecurity experts
Engaged U.S. law enforcement
Patched affected servers
Implemented web access protections
Revised its retention policy for the SFTP platform
Executed password resets
Took the application offline
Changes made: Working to further enhance its security controls
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 4 weeks(30 days from discovery to filing)
Compliance flags: WA AG ≤30d
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.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 4 filings · 4 states

View merged incident ↗

Montana State AGJun 29 · first

Washington State AG+1d · this page

New Hampshire State AG+4d

Massachusetts State AG+6d

Pattern: first filing Jun 29 (MT), last Jul 5 (MA) — a 6-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://agportal-s3bucket.s3.amazonaws.com/databreach/BreachM15307.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jun 30, 2023
Raw hash: 67310e1008bad416ddbd6e5f4fb22f0fc1b6d04e74741cfc809ced15b34ee50f

Linked disclosures

Regulatory filings (3) · sorted by filing gap

Reporting entityBRISTOL-MYERS SQUIBB COMPANY

Victim entityBRISTOL-MYERS SQUIBB COMPANY

Incidentdiscovered May 31, 2023

Stated responseInitiated an investigation with the assistance of third-party cybersecurity experts

ComplianceWA AG ≤30d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com