Fluke Suffered Third-Party Cyberattack

July 2, 2026

INCIDENT

Everett, Washington-based test, measurement, and diagnostic equipment maker Fluke Corporation suffered a cyberattack as a result of a vulnerability in a third-party application.
“We are writing to inform you that a criminal actor detected and exploited a vulnerability within an established third-party business application, which resulted in a data security incident at Fluke Corporation,” the company said in a notice to victims. “The incident involved your personal information, and this letter provides details about what happened, what information of yours may have been involved, what we are doing in response, and what resources are available to you.”
“On September 29, 2025, we learned that a criminal actor exploited a vulnerability in a third-party application used by us and was able to access a limited segment of our network,” the company said in a notice to the 18,517 victims of the attack. “This vulnerability also impacted various other companies that use the same software across different industries.”

Incident Date

September 29, 2025

Estimated Cost

Unknown at this time

Type of Malware

No Malware identified

Threat Source

No threat source identified