Shamis & Gentile P.A., one of the nation's premier class action law firms specializing in data breach cases, is investigating the Suncoast Credit Union data breach.
If you were affected by the data breach, your sensitive personally identifiable information may have been exposed, and you may be eligible for compensation.
About Suncoast Credit Union
Suncoast Credit Union is a large, Florida-based not-for-profit financial cooperative. It provides a wide range of consumer and small-business banking services, including checking and savings accounts, loans, credit cards and digital banking. With over a million members, Suncoast Credit Union is one of the largest credit unions in Florida and the United States.
The organization was originally founded in 1934 to serve educators in Hillsborough County. Over the years, it expanded its membership to include residents across many counties along Florida’s Gulf Coast. Today, Suncoast Credit Union operates dozens of branches and emphasizes both in-person and digital access for its members.
What Happened?
In August 2025, Suncoast Credit Union was impacted by a data breach involving Marquis Software Solutions, a third-party marketing and communications vendor. On Aug. 14, 2025, Marquis detected suspicious activity on its network and later determined it was the victim of a ransomware attack. The incident was limited to Marquis’ environment and did not impact Suncoast Credit Union’s internal systems.
Investigations revealed that an unauth
Source: https://www.claimdepot.com/investigations/suncoast-credit-union-data-breach-2025
Suncoast Credit Union cybersecurity rating report: https://www.rankiteo.com/company/suncoastcreditunion
"id": "SUN1764888584",
"linkid": "suncoastcreditunion",
"type": "Ransomware",
"date": "8/2025",
"severity": "100",
"impact": "4",
"explanation": "Attack with significant impact with customers data leaks"{'affected_entities': [{'customers_affected': None,
'industry': 'Banking/Financial Services',
'location': 'Florida, United States',
'name': 'Suncoast Credit Union',
'size': 'Large (over 1 million members)',
'type': 'Financial Cooperative'},
{'customers_affected': None,
'industry': 'Marketing and Communications',
'location': None,
'name': 'Marquis Software Solutions',
'size': None,
'type': 'Third-Party Vendor'}],
'attack_vector': 'Third-Party Vendor Compromise',
'data_breach': {'data_encryption': None,
'data_exfiltration': None,
'file_types_exposed': None,
'number_of_records_exposed': None,
'personally_identifiable_information': 'Yes',
'sensitivity_of_data': 'High',
'type_of_data_compromised': 'Personally '
'Identifiable '
'Information (PII)'},
'date_detected': '2025-08-14',
'description': 'Suncoast Credit Union was impacted by a data '
'breach involving Marquis Software Solutions, a '
'third-party marketing and communications vendor. '
'Marquis detected suspicious activity on its '
'network on August 14, 2025, later determined to '
'be a ransomware attack. The incident was limited '
'to Marquis’ environment and did not impact '
'Suncoast Credit Union’s internal systems. '
'Sensitive personally identifiable information '
'may have been exposed.',
'impact': {'brand_reputation_impact': None,
'conversion_rate_impact': None,
'customer_complaints': None,
'data_compromised': 'Sensitive personally '
'identifiable information',
'downtime': None,
'financial_loss': None,
'identity_theft_risk': 'High',
'legal_liabilities': None,
'operational_impact': None,
'payment_information_risk': None,
'revenue_loss': None,
'systems_affected': "Marquis Software Solutions' "
'network (third-party vendor)'},
'initial_access_broker': {'backdoors_established': None,
'data_sold_on_dark_web': None,
'entry_point': None,
'high_value_targets': None,
'reconnaissance_period': None},
'investigation_status': 'Ongoing',
'post_incident_analysis': {'corrective_actions': None,
'root_causes': None},
'ransomware': {'data_encryption': None,
'data_exfiltration': None,
'ransom_demanded': None,
'ransom_paid': None,
'ransomware_strain': None},
'references': [{'date_accessed': None,
'source': 'Shamis & Gentile P.A.',
'url': None}],
'regulatory_compliance': {'fines_imposed': None,
'legal_actions': None,
'regulations_violated': None,
'regulatory_notifications': None},
'response': {'adaptive_behavioral_waf': None,
'communication_strategy': None,
'containment_measures': None,
'enhanced_monitoring': None,
'incident_response_plan_activated': None,
'law_enforcement_notified': None,
'network_segmentation': None,
'on_demand_scrubbing_services': None,
'recovery_measures': None,
'remediation_measures': None,
'third_party_assistance': None},
'title': 'Suncoast Credit Union Data Breach via Third-Party '
'Vendor (Marquis Software Solutions)',
'type': 'Data Breach'}