Ransomware attack on MCNA Dental results in 9 million personal data breaches

Managed Care of North America (MCNA) Dental, one of the largest providers of oral health insurance and dental care in the US, has posted a data breach notification on its website, informing nearly 9 million patients that their personal data has been compromised.

The LockBit ransomware group claimed to be behind the attack and confirmed it had released all the files it exfiltrated in early April, because MCNA refused to pay the ransom demand.

The investigation into the attack revealed that compromised personal information may include names, addresses, telephone numbers, dates of birth, social security numbers, driver's licence numbers, identification numbers, health insurance information and dental care-related information.