Optima Tax Relief

Optima Tax Relief

Optima Tax Relief, a leading U.S. tax resolution firm, suffered a Chaos ransomware attack resulting in the leak of 69 GB of data. The stolen data includes corporate information and customer case files, which contain sensitive personal information such as Social Security numbers, phone numbers, and home addresses. This data breach poses a significant risk of identity theft and other malicious activities. The attack was a double-extortion scheme, where data was both stolen and servers were encrypted.

Source: https://www.bleepingcomputer.com/news/security/tax-resolution-firm-optima-tax-relief-hit-by-ransomware-data-leaked/

TPRM report: https://scoringcyber.rankiteo.com/company/optimataxrelief

"id": "opt633060725",
"linkid": "optimataxrelief",
"type": "Ransomware",
"date": "6/2025",
"severity": "100",
"impact": "",
"explanation": "Attack with significant impact with customers data leaks: Attack by hackers which causes data leak of customer information ( only if no ransomware )"
{'affected_entities': [{'industry': 'Financial Services',
                        'location': 'United States',
                        'name': 'Optima Tax Relief',
                        'type': 'Tax resolution firm'}],
 'data_breach': {'data_exfiltration': True,
                 'personally_identifiable_information': True,
                 'sensitivity_of_data': 'High',
                 'type_of_data_compromised': ['Social Security numbers',
                                              'phone numbers',
                                              'home addresses']},
 'description': 'U.S. tax resolution firm Optima Tax Relief suffered a Chaos '
                'ransomware attack, with the threat actors now leaking data '
                'stolen from the company.',
 'impact': {'data_compromised': ['corporate data', 'customer case files'],
            'identity_theft_risk': 'High'},
 'motivation': 'Financial gain',
 'ransomware': {'data_encryption': True,
                'data_exfiltration': True,
                'ransomware_strain': 'Chaos'},
 'references': [{'source': 'BleepingComputer'}],
 'threat_actor': 'Chaos ransomware gang',
 'title': 'Optima Tax Relief Ransomware Attack',
 'type': 'Ransomware'}
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