Fluke Corporation has notified affected individuals that a criminal actor exploited a vulnerability in a third-party business application the company relies on, gaining access to a limited segment of Fluke’s network. This was a case of hacking or system intrusion rather than a direct attack on Fluke’s own systems — the same software vulnerability reportedly affected other companies across different industries as well. Fluke says it learned of the incident on September 29, 2025, and later determined through its investigation that the criminal actor had access to its network from August 10, 2025, until October 7, 2025. A forensic review of what data may have been accessed was completed on May 8, 2026.
The letter is addressed generally rather than naming a specific group, so the exact number of people affected is not stated in the notice. What is clear is that the exposed information varies from person to person, and not everyone affected will have had every category of data involved.
What information was exposed?
- Social Security number
- Date of birth
- Indicator of whether you self-identified as having a disability
Fluke is offering 24 months of free identity theft prevention and mitigation services, including credit monitoring, through Epiq via Equifax Complete Premier. According to the letter, you can enroll at www.equifax.com/activate using the unique Activation Code included in your individual notice, before the enrollment deadline printed there — both were left as placeholders in the version of the letter we reviewed, so check your own copy for the specific code and date.
What should you do now?
- Enroll in the free Equifax Complete Premier identity protection service offered by Fluke before the deadline in your letter
- Review your credit reports, account statements, and any explanation-of-benefits statements for activity you don’t recognize
- Consider placing a fraud alert or a security freeze on your credit file with Equifax, Experian, and TransUnion, since your Social Security number and date of birth were involved
- Because a Social Security number is involved, consider signing up for a service like Aura or LifeLock, which can alert you if your information appears elsewhere
- Use strong, unique passwords (at least 13 characters, mixing numbers, symbols, and upper/lowercase letters) on your financial and email accounts
- Be cautious of unexpected calls or emails asking you to confirm personal details, and never share sensitive information unless you can verify who you’re speaking with
- Report any suspected identity theft or fraud promptly to your financial institution, local law enforcement, or your state Attorney General
If you have questions, Fluke can be reached at 888-500-5620 (Monday through Friday, 9am to 9pm Eastern Time) or by mail at 6920 Seaway Blvd, Everett, Washington 98203.