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F5 Networks Data Breach Lawsuit Investigation
Shamis & Gentile P.A., one of the nation's premier class action law firms specializing in data breach cases, is investigating the F5, Inc. data breach.
If you were affected by the data breach, your sensitive personally identifiable information may have been exposed, and you may be eligible for compensation.
About F5
F5, Inc. is a technology company based in Seattle, Washington, focused on application security, multi-cloud management, online fraud prevention, and network security. Founded in 1996, F5 is a major provider of application delivery networking solutions and security products for businesses worldwide.
The company’s flagship offerings include BIG-IP, a line of products for load balancing and traffic management, as well as advanced web application firewalls and fraud protection tools. F5 serves a global client base, including many Fortune 50 companies, and partners with leading cloud providers such as Amazon Web Services, Microsoft Azure, and Google Cloud Platform.
What happened?
In August 2025, F5 discovered that a threat actor had gained unauthorized access to certain company systems. The breach was not publicly disclosed until Oct. 15, 2025, after federal authorities determined a delay was warranted.
F5 reported that the cybercriminal maintained long-term, persistent access to parts of its infrastructure, including the BIG-IP product development environment and engineering knowledge management platform. Some files were exfiltrated during this incident, which included:
- Portions of F5’s BIG-IP source code
- Information about undisclosed vulnerabilities in BIG-IP products
- Configuration or implementation information for a small percentage of customers
The company is directly contacting affected customers as they review the contents of the exfiltrated files.
Your Rights and Next Steps
If you are a customer or end user of F5 products, it is important to stay informed about this breach. F5 has released software updates and security guidance to help customers protect their systems. It is recommended to apply all available updates and follow best practices for securing F5 environments.
Individuals whose information may have been exposed could face risks such as targeted cyberattacks or fraud. Under U.S. law, those affected by a data breach may have the right to seek compensation for damages, including costs related to identity theft, credit monitoring, or other losses.
Lawyers are ready to help review your situation and determine if you are eligible to join a class action lawsuit. They can assist in holding F5 accountable and pursuing compensation for any harm suffered as a result of the breach.
You May Be Entitled to Compensation
If your information was exposed in the F5 data breach, you may qualify for financial compensation. Lawyers are investigating claims on behalf of affected individuals and are available to discuss your legal options.
To find out if you are eligible to join a lawsuit, complete the form below.
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