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Confidence MediumMay 22, 2026fluke.com

Fluke Corporation data breach impacts over 18,000, Clop claims responsibility

PatternExternal actor · Malware · Confidentiality impact

Fluke Corporation notified over 18,000 people of a data breach that occurred between August 10 and October 7, 2025. The breach, resulting from an exploited vulnerability in a third-party application, compromised highly sensitive personal information including SSNs, birth dates, and disability status. The Clop ransomware group claimed responsibility.

Signal date
May 22, 2026
Updated
Jun 24, 2026
Confidence
Medium
Sources
2 sources

Signal context

First seen: May 22, 2026

Last updated: Jun 24, 2026

Status: Public signal

Key points

  • Over 18,000 individuals affected.
  • Breach occurred August-October 2025 via third-party app vulnerability.
  • Compromised data includes SSNs, birth dates, and disability status.

Signal analysis

Beta

It helps compare this signal with other published signals without treating the labels as final determinations.

Affected organization
Fluke logo
Fluke

Likely country: Location not provided

Threat source
Malware, Hacking activity

Watch ransomware, endpoint compromise and business interruption exposure.

  • Source type: outside the affected organization
Business impact
Potential operational disruption

Impact area: Confidentiality, Availability

Likely asset: User or customer data

Trend context
59 signals with similar action pattern
  • 1 signal in the same sector
  • 69 signals with the same likely impact area
  • 1 signal linked to this organization/domain
Mentioned entities
FlukeData DisclosureFluke CorporationClopSSNsThe ClopOverAugust-OctoberCompromised

External sources

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