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Norton Healthcare Data Breach | Affected 2.5 Million Individuals

norton healthcare data breach

In May 2023, Kentucky-based healthcare system Norton Healthcare suffered a major data breach when a ransomware attack compromised the personal and protected health information (PHI) of up to 2.5 million individuals including patients, employees, and dependents.

This incident highlights the growing threat of cyberattacks on healthcare organizations and underscores the importance of robust cybersecurity measures to protect sensitive patient data.

Details of the Norton Healthcare Data Breach

On May 9, 2023, Norton Healthcare discovered unauthorized access to certain network storage devices.

While the medical record system remained untouched, the exposed information included names, contact information, social security numbers, dates of birth, health information, insurance information, and medical identification numbers.

For some individuals, the exposed data also included financial account numbers, driver’s licenses or other government ID numbers, and even digital signatures.

BlackCat Claims Responsibility for Ransomware Attack

The notorious ransomware group BlackCat (also known as AlphV) has now publicly claimed responsibility for the attack, leaving no room for doubt.

BlackCat’s announcement, published on May 25th, includes a scathing message for Norton Healthcare’s executive board and CEO.

They accuse the leadership of prioritizing money over patient safety and well-being, further alleging that false statements were made regarding the nature of the incident.

BlackCat claims to have exfiltrated a staggering 4.7 TB of data, including patient information, photos, financial records, and employee data with Social Security numbers.

To prove their claims, BlackCat leaked a sample of the stolen data, including personal and sensitive information of patients.

The sample chillingly references patient photos, reminiscent of their past attack on Lehigh Valley Health Network, where nude images of breast cancer patients were exposed.

Norton Healthcare’s Response

  • Initial Response:
    • Identified suspicious activity on May 9, 2023
    • Secured network and launched investigation
    • Announced incident on website on May 11, 2023
  • Investigation and Notification:
    • Investigation determined unauthorized access between May 7 and May 9, 2023
    • Files recovered from backups on May 10, 2023
    • Norton Healthcare updated their website on May 24th, stating that the incident remains under investigation and systems are being brought back online.
    • They offered a brief update on service availability and directed patients to their website for more information.
    • Investigation and file review concluded in November 2023
    • Notification letters sent to affected individuals starting on December 8, 2023
  • Security Measures:
    • Enhanced security safeguards since the attack
    • No additional indicators of compromise found
    • Complimentary credit monitoring and identity theft protection offered to affected individuals

Legal and Regulatory Implications

  • Breach reported to HHS’ Office for Civil Rights on July 7, 2023
  • Lawsuit filed against Norton Healthcare alleging failure to implement appropriate safeguards and timely notifications

Industry Trends and Cybersecurity Challenges

The healthcare industry has been a prime target for cybercriminals due to its reliance on technology and the sensitive nature of patient data.

Ransomware attacks are particularly concerning, as they disrupt operations and demand hefty ransom payments.

According to the Department of Health and Human Services (HHS), there were over 600 reported healthcare data breaches in 2022, impacting over 500,000 individuals.

In 2023 alone, reported breaches affected over 88 million individuals, representing a 60% rise from the previous year.

Recommendations for Healthcare Organizations

  • Implement strong cybersecurity measures to protect sensitive patient data
  • Regularly review and update security protocols
  • Train employees on cybersecurity awareness and best practices
  • Have a plan for responding to cyberattacks
  • Communicate effectively with patients and stakeholders in the event of a breach
  • Healthcare organizations should collect and retain only the minimum amount of patient data necessary for legitimate purposes, minimizing the potential impact of breaches.


The Norton Healthcare data breach is a significant event impacting millions of individuals. With the increasing sophistication of cyberattacks, healthcare organizations must remain vigilant in protecting patient data.

By implementing robust security measures, healthcare organizations can mitigate the risk of data breaches and protect the sensitive information entrusted to them.

Kevin James

Kevin James

I'm Kevin James, and I'm passionate about writing on Security and cybersecurity topics. Here, I'd like to share a bit more about myself. I hold a Bachelor of Science in Cybersecurity from Utica College, New York, which has been the foundation of my career in cybersecurity. As a writer, I have the privilege of sharing my insights and knowledge on a wide range of cybersecurity topics. You'll find my articles here at, covering the latest trends, threats, and solutions in the field.