HackingHealthcareTechnologyInformationVulnerability ExploitStolen CredentialsZero-DaySupply Chain (3P Vendor)Data ExfiltratedCustomer Data InvolvedPHIHealth (basic)Identity (basic)LowContained

Nuance Communications, Inc

bd_829cc01dc8d0b732 · schema v1 · pii pii-v1

Severity

Low

Discovered

May 31, 2023

Filed

Sep 15, 2023

To disclose

15 weeks

Affected

Not disclosed

Linked

11 records

Confidence

64%

Full breach record for Nuance Communications, Inc →6 incidents on file

Nuance Communications, Inc. disclosed a data breach resulting from a previously unknown vulnerability in MOVEit Transfer software provided by third-party vendor Progress Software Corporation. An unauthorized third party exfiltrated data between May 28 and May 29, 2023. Nuance was notified of the vulnerability on May 31, 2023. Affected data included names, dates of birth, medical record numbers, gender, and details about radiology studies (provider, facility, date of service, study identifiers, and study reports). Social Security numbers and financial information were not involved. Nuance secured systems, engaged forensic experts, notified law enforcement, and sent notices to affected individuals starting August 1, 2023.

J jump to incidentP pin to compareR raw source

California clockDiscovered May 31, 2023 → Notified Aug 1, 202362d ✗ CA 60-day late15 weeks discovery → filing

Incident timeline

undetected · 3 days

discovery → filing · 15 weeks / 107 days

May 28, 2023

Begins

May 31, 2023

Discovered

Sep 15, 2023

Filed

vs. sector median

+6 wks slower

This filing is one of 11 records about the same incident.View merged incident

Part of Progress Software Corporation supply-chain incident (2023) — a supply-chain cascade affecting multiple organizations.View cascade →

A leak claim by cl0p about this victim was first seen 91 days before this filing.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Sitecl0pbd_40ea5b2a63ba1e582023-06-16 · +91dVerified by operator

Regulatory filings (9) · sorted by filing gap

Maine State AGbd_2d18f75acad25ac92023-09-15Verified
New Hampshire State AGbd_42ba23005cabceb82023-09-15Verified
Washington State AGbd_82faba2aed5d0b312023-09-15Verified by operator
HHS OCRbd_cd3e342a18e72ccb2023-09-15Verified

Show 5 more filings ↓up to 257d gap

Montana State AGbd_f82949cd77b8e1ac2023-09-15Verified
Delaware State AGbd_119ca48980839f9b2023-09-18 · +3dVerified
Oregon State AGbd_61e841c1c65090342023-09-19 · +4dVerified
Illinois State AGbd_59fd556cb57cb64f2023-01-01 · +257dVerified by operator
Illinois State AGbd_6a436e30174844602023-01-01 · +257dVerified by operator

Name: Nuance Communications, Inc
norm: nuance communications
Domain: nuance.com

Name: Nuance Communications, Inc
norm: nuance communications
Domain: nuance.com
Industry: HealthcarellmTechnologyllm

Discovered: May 31, 2023
Breach occurred: May 28, 2023 – May 29, 2023
Undetected for: 3 daysoccurrence → discovery
Materiality determined: —
Notification sent: Aug 1, 2023
Affected individuals: Not disclosed
Data types: PHIHealth (basic)Identity (basic)
Attack vector: Third-Party / Supply Chain
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1195 Supply Chain CompromiseT1041 Exfiltration Over C2 Channel
Threat actor: External
Regulator citations: Notified law enforcement authorities
Third party: via Progress Software Corporation
Initial access: supply_chain

During the incident: Immediately took steps to secure the servers running the MOVEit Transfer application
Worked with cybersecurity experts and legal counsel to conduct a comprehensive investigation of the incident
Notified law enforcement authorities
Notified affected customers
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 15 weeks(107 days from discovery to filing)
Compliance flags: CA 60-day late · 62dLeak >90d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.
Clock breakdown: Statute Window Elapsed Threshold Status
California
Discovered: May 31, 2023
→ Notified: Aug 1, 2023
62d 60 days (analyst band, pre-2026 discoveries) CA 60-day late

Statute	Window	Elapsed	Threshold	Status
California	Discovered: May 31, 2023 → Notified: Aug 1, 2023	62d	60 days (analyst band, pre-2026 discoveries)	CA 60-day late

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 10 filings · 9 states

View merged incident ↗

Illinois State AGJan 1 · first

Maine State AG+257d

New Hampshire State AG+257d

Washington State AG+257d

HHS OCR+257d

Montana State AG+257d

California State AG+257d · this page

Delaware State AG+260d

Oregon State AG+261d

Pattern: first filing Jan 1 (IL), last Sep 19 (OR) — a 261-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://oag.ca.gov/ecrime/databreach/reports/sb24-573426
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 15, 2023
Raw hash: e6ed0ef9eafb88da190e7f8e7214501b10d3954e477158268834484477dd81be

Linked disclosures

Ransomware claims (1)

Regulatory filings (9) · sorted by filing gap

Reporting entityNuance Communications, Inc

Victim entityNuance Communications, Inc

Incidentdiscovered May 31, 2023

Stated responseImmediately took steps to secure the servers running the MOVEit Transfer application

ComplianceCA 60-day late

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov