Class Action Lawsuit Filed Over Cierant Data Breach

On August 21, 2025, a class action lawsuit was filed in federal court against Cierant Corporation following its reported breach of protected health information.

The complaint, brought on behalf of a minor child and others similarly affected, alleges that Cierant failed to secure sensitive data, delayed notifying victims, and left individuals exposed to identity theft and fraud.

The lawsuit points to vulnerabilities in a third-party file transfer tool and raises sharp questions about Cierant’s security practices and response timeline.

We will be tracking this case closely and sharing key developments as they unfold.

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