CSEA Local 1000 Reports Data Breach Affecting Sensitive Personal Information
CSEA Local 1000, a labor union representing public sector employees, disclosed a data breach that may have exposed sensitive personal information. On May 30, 2025, the organization detected suspicious activity on its computer systems, prompting an investigation.
The investigation revealed that an unauthorized third party accessed and potentially acquired personal data between May 3 and May 31, 2025. The compromised information includes names and Social Security numbers, though the exact details vary by individual.
On January 20, 2026, CSEA Local 1000 began notifying affected individuals via mail, providing specifics on the exposed data and offering complimentary credit monitoring services. The breach notice was filed with the Attorney General of Maine, where additional details are available.
Source: https://straussborrelli.com/2026/01/21/csea-local-1000-data-breach-investigation/
CSEA Local 1000 cybersecurity rating report: https://www.rankiteo.com/company/csea-local-1000
"id": "CSE1769023881",
"linkid": "csea-local-1000",
"type": "Breach",
"date": "5/2025",
"severity": "85",
"impact": "4",
"explanation": "Attack with significant impact with customers data leaks"{'affected_entities': [{'industry': 'Public Sector',
'name': 'CSEA Local 1000',
'type': 'Labor Union'}],
'customer_advisories': 'Complimentary credit monitoring services offered to '
'affected individuals',
'data_breach': {'data_exfiltration': 'Potential acquisition by unauthorized '
'third party',
'personally_identifiable_information': ['Names',
'Social Security '
'numbers'],
'sensitivity_of_data': 'High',
'type_of_data_compromised': 'Personally Identifiable '
'Information (PII)'},
'date_detected': '2025-05-30',
'date_publicly_disclosed': '2026-01-20',
'description': 'CSEA Local 1000, a labor union representing public sector '
'employees, disclosed a data breach that may have exposed '
'sensitive personal information. An unauthorized third party '
'accessed and potentially acquired personal data, including '
'names and Social Security numbers.',
'impact': {'data_compromised': 'Names and Social Security numbers',
'identity_theft_risk': 'High'},
'investigation_status': 'Completed',
'references': [{'source': 'Attorney General of Maine'}],
'regulatory_compliance': {'regulatory_notifications': ['Filed with the '
'Attorney General of '
'Maine']},
'response': {'communication_strategy': 'Notification via mail to affected '
'individuals'},
'threat_actor': 'Unauthorized third party',
'title': 'CSEA Local 1000 Data Breach',
'type': 'Data Breach'}