2025-05-06 MASIMO CORP Cybersecurity Incident

Page last updated on May 7, 2025

MASIMO CORP initially disclosed a cybersecurity incident in an SEC 8-K filing on 2025-05-06 16:10:12 EDT.

Company Summary

Masimo Corporation, a medical technology company, develops, manufactures, and markets noninvasive patient monitoring products.

Incident Details

Material: Unknown
Is Breach: Unknown
Records Compromised: Unknown
Data Types Impacted: No Data Types Tracked (yet)

Compromised Date:
Detected Date: 2025-04-27
Disclosure Date: 2025-05-06
Contained Date:
Recovered Date:

Attack Goal: Unknown

Costs: No Costs Tracked (yet)

Filings

8-K filed on 2025-05-06

MASIMO CORP filed an 8-K at 2025-05-06 16:10:12 EDT
Accession Number: 0001104659-25-045035

Item 8.01 Other Events.

On April 27, 2025, Masimo Corporation (the “Company” or “we”) identified unauthorized activity on the Company’s on-premise network. Upon detection, we activated our incident response protocols and implemented containment measures, including proactively isolating impacted systems. We promptly commenced an investigation and are actively working to assess, mitigate, and remediate the incident with the assistance of third-party cybersecurity professionals. The Company has also notified and is coordinating with law enforcement.

As a result of the incident, certain of the Company’s manufacturing facilities have been operating at less than normal levels, and the Company’s ability to process, fulfill, and ship customer orders timely has been temporarily impacted. The Company has been working diligently to bring the affected portions of its network back online, restore normal business operations and mitigate the impact of the incident.

The investigation of the incident remains ongoing, and the full scope, nature, and impact of the incident are not yet known. At this time, the Company believes that the incident appears unrelated to and is not affecting the Company’s cloud-based systems.

Company Information