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UC San Diego Health 
Data Breach

The Lyon Firm is actively involved in California healthcare data breach lawsuits 
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Data Breach Lawyers

Investigating UC San Diego Health phishing attack claims

Thank you for considering The Lyon Firm. At this time, we are not accepting plaintiffs related to this specific consumer issue. However, if you would like to be contacted in the future, please complete the contact form. By completing the form you will be contacted if the Firm begins accepting new cases on this matter, and you will also be included in firm news alerts related to important consumer safety and privacy issues to help keep you informed about related issues.

UC San Diego Health has announced a data breach that may impact thousands of patients, students, and staff members’ Protected Health Information (PHI). Victims are urged to remain vigilant and to contact a legal professional to learn more about protecting data and preventing medical identity theft in the future. 

On March 8, 2024, UC San Diego Health (UCSD Health) filed a notice of data breach with the Attorney General of California after discovering an email phishing attack that gave an unauthorized party access to email accounts.

Phishing occurs when an email is sent that looks like it is from a trustworthy source, but it is a cybercriminal attempting to steal data for various reasons. A phishing email misleads a recipient to share or provide access to their email login credentials.

In their notice sent to individuals, UCSD Health says the following could have been compromised: names, Social Security numbers, mailing addresses, email addresses, dates of birth, medical record numbers, health insurance information, treatment cost information, and medical information.

Upon completing an initial investigation, UC San Diego Health began sending out data breach notification letters to all individuals whose information may have been affected by the data security incident.

If you receive a data breach notification from UC San Diego Health or another healthcare entity, it is important understand what is at risk now and in the future. A data breach lawyer can help you learn more about the incident, and what the legal process may look like if you decide to file a class action claim.

According to their website, UC San Diego Health learned that an unauthorized party accessed certain employee email accounts between January 9, 2024 and January 22, 2024.

On March 8, 2024, UC San Diego Health sent out data breach letters to anyone who was affected by the incident. These letters should provide victims with more details, and a full list of what information was compromised.

More Information About UC San Diego Health

The UC San Diego Health System is a large, regional health system. UCSD Health operates UC, San Diego Medical Center, Jacobs Medical Center, East Campus Medical Center, Moores Cancer Center, and Sulpizio Cardiovascular Center, as well as dozens of clinics in the San Diego, California area.

The Lyon Firm is investigating the UC San Diego Health phishing attack and data breach and is actively involved in numerous California data privacy cases and has experience filing data security claims on behalf of plaintiffs nationwide.


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Joseph Lyon has 17 years of experience representing individuals in complex litigation matters. He has represented individuals in every state against many of the largest companies in the world.

The Firm focuses on single-event civil cases and class actions involving corporate neglect & fraud, toxic exposure, product defects & recalls, medical malpractice, and invasion of privacy.


The Firm offers contingency fees, advancing all costs of the litigation, and accepting the full financial risk, allowing our clients full access to the legal system while reducing the financial stress while they focus on their healthcare and financial needs.