Another vendor, MCNA Dental, informed Florida Healthy Kids that they had experienced a cyberattack.
8.9 million members were impacted by that incident, according to MCNA Dental's submission to HHS.
It was discovered on two different threat actors' leak sites where information has subsequently been exposed after MCNA Dental ostensibly declined to pay the demanded ransom.
Source: https://www.databreaches.net/florida-healthy-kids-notified-by-maximus-of-moveit-breach/
TPRM report: https://scoringcyber.rankiteo.com/company/mcnadental
"id": "mcn11619823",
"linkid": "mcnadental",
"type": "Breach",
"date": "05/2021",
"severity": "100",
"impact": "5",
"explanation": "Attack threatening the organization’s existence"{'affected_entities': [{'customers_affected': 8900000,
'industry': 'Healthcare',
'name': 'MCNA Dental',
'type': 'Vendor'}],
'data_breach': {'data_exfiltration': True,
'number_of_records_exposed': 8900000,
'type_of_data_compromised': 'Member information'},
'description': 'MCNA Dental experienced a cyberattack impacting 8.9 million '
'members. Information was subsequently exposed on two '
"different threat actors' leak sites after MCNA Dental "
'ostensibly declined to pay the demanded ransom.',
'impact': {'data_compromised': 'Member information'},
'motivation': 'Ransom',
'ransomware': {'data_exfiltration': True, 'ransom_demanded': True},
'references': [{'source': 'HHS'}],
'title': 'MCNA Dental Cyberattack',
'type': 'Cyberattack'}