Stueve Siegel Hanson Investigates Tandem Diabetes Care Data Breach


Breach Involved Clinical Data Regarding Patients’ Diabetes Therapy

KANSAS CITY, Mo. (March 30, 2020) – Stueve Siegel Hanson LLP, a national leader in privacy and cybersecurity litigation, is investigating the data breach at Tandem Diabetes Care, Inc. that compromised the sensitive personal information of 140,000 patients, the firm announced today.

On January 17, Tandem discovered its email system had been hacked through a “phishing” scheme. An internal investigation showed several employee email accounts were compromised for three days between January 17 and January 20. The compromised information included names, email addresses, contact information, Social Security numbers and a range of patient data, including details related to customers’ use of Tandem products or services, and clinical data about diabetes therapy.

Tandem announced the data breach on March 16 and said it would notify affected customers. Individuals who receive these notifications can contact Stueve Siegel Hanson at 816.714.7105 or online to discuss their legal options.

Recognized by Law360 as “Cybersecurity & Privacy Group of the Year,” Stueve Siegel Hanson has prosecuted cases involving the largest data breaches in U.S. history, securing billions of dollars for affected customers. In 2019, the firm’s work included:

  • Securing final approval of a $1.5 billion settlement with Equifax in a nationwide class action resulting from its massive 2017 data breach;
  • Obtaining a $3.25 million settlement in a class action by optometrists following a data breach at the national testing organization for new eye doctors;
  • Serving as co-lead counsel against Capital One following a data breach affecting 106 million credit applicants; and
  • Pursuing a consumer lawsuit accusing Facebook of tracking users’ location information even after they opt out of Location History features.

About Stueve Siegel Hanson:

Stueve Siegel Hanson provides aggressive, cutting-edge representation in litigation.  Headquartered in Kansas City, Mo., the law firm serves companies in business disputes as well as individuals harmed by dangerous products, unfair employers or unsavory business practices. More information is available at

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