Every public data breach

Disclosed this week44On record26,355

44 disclosed this week · 26,355 on record

Novocure

Disclosed Sep 1, 20261,464 affectedConfirmed

SEC filing

Novocure breach exposes data of 1,400+ cancer patients and employees

Novocure told the SEC that a mid-August cyberattack exposed patient ID numbers of more than 1,400 US cancer patients, identifying details of fewer than 50, and employee contact data. ShinyHunters leaked a 33 GB archive.

What is known

People affected1,464 (as reported to HHS)
DisclosedSep 1, 2026
DiscoveredAug 2026
AttackExtortion
Data exposedHealthNamesPhone numbersEmployment
SectorHealthcare · US
StatusConfirmed

Sources

Newsbleepingcomputer.com
Novocure data breach affects more than 1,400 cancer patients
SEC filingsec.gov
NovoCure Form 8-K
Official noticeocrportal.hhs.gov
HHS OCR breach report: Novocure (Healthcare Provider, PA)

Notices filed

TotalSep 1
ResearchCount not stated
TotalSep 9
HHS OCR1,464 people
History of this record
records_basis2026-10-02
empty to hhsby dailySource
records2026-10-02
empty to 1464by dailySource
Added2026-09-25
First recordedby seedSource

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

Everything about Novocure