Powergrid Services LLC

The Maine Office of the Attorney General disclosed that Powergrid Services LLC (PGS) suffered a data breach due to external system hacking between September 13–15, 2021. The incident exposed the Social Security number (SSN) of one Maine resident, though the full scope of the breach remains unclear. PGS notified affected parties on January 19, 2022, nearly four months after the intrusion. The breach involved unauthorized access to systems, leading to the potential compromise of sensitive personal data. While only one individual’s SSN was confirmed as impacted, the nature of the attack—targeting a critical infrastructure-related entity—raises concerns about broader vulnerabilities. The delayed disclosure further highlights gaps in incident response, though no evidence suggests misuse of the exposed data. The breach underscores risks associated with third-party service providers in energy sectors, where even limited exposures can have cascading reputational and regulatory consequences.

Source: https://www.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/b1043fb1-0f1b-4d40-bec8-54b778f5391b.shtml

TPRM report: https://www.rankiteo.com/company/powergridweb

"id": "pow1016090725",
"linkid": "powergridweb",
"type": "Breach",
"date": "9/2021",
"severity": "60",
"impact": "3",
"explanation": "Attack with significant impact with internal employee data leaks"

{'affected_entities': [{'customers_affected': '1 (Maine resident)',
                        'name': 'Powergrid Services LLC (PGS)',
                        'type': 'Company'}],
 'attack_vector': 'External System Hacking',
 'customer_advisories': 'Notification issued on January 19, 2022',
 'data_breach': {'number_of_records_exposed': '1',
                 'personally_identifiable_information': 'Yes (SSN)',
                 'sensitivity_of_data': 'High (PII - SSN)',
                 'type_of_data_compromised': ['Social Security number']},
 'date_publicly_disclosed': '2022-01-19',
 'description': 'The Maine Office of the Attorney General reported that '
                'Powergrid Services LLC (PGS) experienced a data breach '
                'resulting from external system hacking between September 13, '
                '2021 and September 15, 2021. The breach potentially affected '
                'the Social Security number of one (1) Maine resident.',
 'impact': {'data_compromised': ['Social Security number'],
            'identity_theft_risk': 'Potential (1 individual)'},
 'references': [{'source': 'Maine Office of the Attorney General'}],
 'regulatory_compliance': {'regulatory_notifications': 'Maine Office of the '
                                                       'Attorney General'},
 'response': {'communication_strategy': 'Notification to affected '
                                        'individual(s) via Maine AG office'},
 'title': 'Powergrid Services LLC Data Breach (2021)',
 'type': 'Data Breach'}