Every public data breach

Disclosed this week47On record26,367

47 disclosed this week · 26,367 on record

Nuance Communications

Disclosed Nov 18, 20221,225,054 affectedConfirmed

Official notice

MOVEit breach exposes patient data held by Nuance for healthcare providers

Nuance, a Microsoft company, said an unauthorized party took data from its MOVEit Transfer environment on May 28 and 29, 2023, including personal information in audit logs belonging to patients of healthcare provider customers.

What is known

People affected1,225,054 (as reported to HHS)
DisclosedNov 18, 2022
DiscoveredAug 1, 2023
HappenedMay 28, 2023
AttackSupply chain
Data exposedNamesHealthOther
SectorHealthcare · US
StatusConfirmed
Part ofMoveit (2023)

Sources

Official noticeattorneygeneral.delaware.gov
Notice letter filed with the Delaware DOJ: Nuance Communications
Official noticejustice.oregon.gov
Oregon DOJ breach notice: Nuance Communications
Regulatoroag.ca.gov
California AG breach notice: Nuance Communications, Inc.
Official noticeocrportal.hhs.gov
HHS OCR breach report (archive, resolved): Nuance Communications (Business Associate, MA)

Notices filed

TotalNov 18, 2022
HHS archive4,830 people
TotalSep 15, 2023
ResearchCount not stated
TotalSep 15, 2023
HHS archive1,225,054 people
Residents of DESep 18, 2023
Delaware DOJ3,072 people
Residents of ORSep 19, 2023
Oregon DOJ1,225,054 people

Same campaign

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affectedHealthcareUSSep 22, 2023Cadence BankMOVEit zero-day used to steal Cadence Bank customer dataSupply chain14K affectedFinanceUSSep 15, 2023HoneywellMOVEit breach exposes pension plan participants' names and SSNsSupply chainManufacturingUSSep 13, 2023Pôle emploiProvider breach exposes names and social security numbers of French job seekersVendor breachGovernmentFRUnverifiedAug 25, 2023Colorado Department of Health Care Policy & FinancingIBM MOVEit breach exposes health data of 4.1 million Colorado Medicaid membersVendor breach4.1M affectedGovernmentUSAug 11, 2023TD AmeritradeMOVEit Transfer breach exposes TD Ameritrade client SSNs and account dataSupply chainFinanceUSAug 8, 2023Missouri Department of Social ServicesIBM MOVEit breach exposes Missouri Medicaid participants' dataVendor breach740K affectedGovernmentUSAug 7, 2023Radius Global SolutionsCollections firm Radius hit by MOVEit breach exposing consumer dataSupply chain632K affectedFinanceUSAug 4, 2023Garrett MotionMOVEit exploitation exposes Garrett Motion company, employee and customer dataSupply chainManufacturingCHAug 2, 2023SercoBenefits vendor CBIZ MOVEit breach exposes Serco US staff dataVendor breach10K affectedGovernmentUSAug 1, 2023Prudential FinancialPBI MOVEit breach exposes Prudential retirement payment recipientsVendor breachInsuranceUSJul 31, 2023Performance Health TechnologyMOVEit breach at health plan vendor exposes 1.7 million Oregon Health Plan membersSupply chain1.8M affectedHealthcareUSJul 31, 2023CareSourceMOVEit hack exposes CareSource members' health and personal dataSupply chain3.2M affectedHealthcareUSJul 27, 2023MaximusMOVEit breach exposes personal and health data of 8 to 11 million peopleSupply chain9.2M affectedGovernmentUSJul 26, 2023Pacific Premier BankTax compliance vendor's MOVEit breach exposes bank client dataVendor breachFinanceUSJul 25, 2023Johns Hopkins University and Health SystemMOVEit server breach at Johns Hopkins exposes personal informationSupply chainEducationUSJul 25, 2023Delta Dental of CaliforniaMOVEit breach exposes financial and card data of 6.9 million dental membersSupply chain7.1M affectedInsuranceUSJul 12, 2023Colorado State UniversityVendor MOVEit breaches expose Colorado State University student and staff dataVendor breachEducationUSJul 12, 2023Deutsche BankAccount switching provider breach exposes Deutsche Bank customer dataVendor breachFinanceDEUnverifiedJul 11, 20231st Source BankUnauthorized party accessed 1st Source Bank's MOVEit serverSupply chain450K affectedFinanceUSJul 10, 2023ShellSupply chain exposed names and employment records.Supply chainEnergyGBUnverifiedJul 6, 2023PlainsCapital BankCore banking vendor's MOVEit breach exposes nearly all PlainsCapital customersVendor breachFinanceUSJul 3, 2023TIAAVendor PBI MOVEit breach exposes TIAA participant dataVendor breachFinanceUSJun 30, 2023F&G Annuities & LifeVendor PBI MOVEit breach exposes data of many F&G policyholdersVendor breachInsuranceUSJun 30, 2023UCLASupply chain, data exposed not stated.Supply chainEducationUSUnverifiedJun 29, 2023Siemens EnergySupply chain, data exposed not stated.Supply chainEnergyDEUnverifiedJun 29, 2023National Student ClearinghouseMOVEit breach at student records nonprofit affects 890 schoolsSupply chainEducationUSJun 29, 2023Talcott ResolutionVendor PBI MOVEit breach exposes over half a million Talcott customersVendor breachInsuranceUSJun 27, 2023New York City Department of EducationMOVEit breach exposes data of about 45,000 NYC students and staffSupply chainEducationUSUnverifiedJun 26, 2023Jackson National Life InsuranceVendor PBI MOVEit breach exposes 700,000 to 800,000 Jackson customersVendor breach853K affectedInsuranceUSJun 26, 2023Corebridge FinancialVendor MOVEit breach exposes Corebridge customers' SSNs and policy numbersVendor breach6.5M affectedInsuranceUSJun 26, 2023Wilton ReassuranceVendor PBI MOVEit breach exposes 1.48 million insurance customersVendor breach1.5M affectedInsuranceUSJun 22, 2023Umpqua BankVendor and on-premise MOVEit breaches expose Umpqua customers' SSNsVendor breach429K affectedFinanceUSJun 22, 2023

Other breaches at Nuance Communications

Breach, details not statedExposed names, Social Security numbers and dates of birth. Reported to the Indiana AG.1,260 affectedAIUSMar 20, 2015
History of this record
disclosed2026-09-25
2023-09-15 to 2022-11-18by backfillSource
records_basis2026-09-25
empty to hhsby backfillSource
records2026-09-25
empty to 1225054by backfillSource
campaign2026-09-25
empty to moveit-2023by seedSource
sector2026-09-25
ai to healthby seedSource
attack2026-09-25
unknown to supply-chainby seedSource
data_types2026-09-25
["names"] to ["names","health","other"]by seedSource
disclosed2026-09-25
2023-09-18 to 2023-09-15by seedSource
summary2026-09-25
empty to Nuance, a Microsoft company, said an unauthorized party took data from its MOVEit Transfer environment on May 28 and 29, 2023, including personal information in audit logs belonging to patients of healthcare provider customers.by seedSource
title2026-09-25
empty to MOVEit breach exposes patient data held by Nuance for healthcare providersby seedSource
Added2026-09-25
First recordedby backfillSource

First seen 2026-09-25 (Delaware DOJ), confirmed by Delaware DOJ. Record counts are as reported. Not legal advice.

Everything about Nuance Communications