Security News > 2023 > May > MCNA Dental data breach impacts 8.9 million people after ransomware attack

Managed Care of North America Dental has published a data breach notification on its website, informing almost 9 million patients that their personal data were compromised.

MCNA Dental is one of the largest government-sponsored dental care and oral health insurance providers in the U.S. In a notice published Friday, MCNA says it became aware of unauthorized access to its computer systems on March 6th, 2023, with an investigation revealing that the hackers first gained access to MCNA's network on February 26th, 2023.

The notices sent to impacted individuals enclose instructions on receiving 12 months of free identity theft protection and credit monitoring service through IDX. However, not every impacted individual will receive a notice as MCNA does not have current addresses for everyone; hence the organization published a substitute notice on IDX, which will stay online for 90 days.

The LockBit ransomware gang claimed the cyberattack on MCNA on March 7th, 2023, when the group published the first data samples stolen from the healthcare provider.

LockBit threatened to publish 700GB of sensitive, confidential information they allegedly exfiltrated from MCNA's networks unless they were paid $10 million.

As the data is likely in the hands of other threat actors, all impacted users must monitor their credit reports for fraudulent activity and signs of identity theft.

News URL

https://www.bleepingcomputer.com/news/security/mcna-dental-data-breach-impacts-89-million-people-after-ransomware-attack/