DHJJ Data Breach Exposes Personal Information of Individuals in November 2025
In March 2026, Wolf Haldenstein Adler Freeman & Herz LLP, a national consumer rights law firm, announced an investigation into a data breach at DHJJ, Ltd., a Naperville, Illinois-based firm. The breach, which occurred in November 2025, may have resulted in the theft of sensitive personal information, including names, addresses, dates of birth, and Social Security numbers.
Affected individuals have been notified, and there are indications that compromised data may be circulating on the dark web. The law firm, with offices in New York, Chicago, Nashville, and San Diego, is examining potential legal claims for those impacted by the incident. DHJJ has not disclosed further details about the breach’s scope or the number of individuals affected.
DHJJ Certified Public Accountants and Business Advisors cybersecurity rating report: https://www.rankiteo.com/company/dhjj
"id": "DHJ1774435323",
"linkid": "dhjj",
"type": "Breach",
"date": "3/2026",
"severity": "85",
"impact": "4",
"explanation": "Attack with significant impact with customers data leaks"{'affected_entities': [{'location': 'Naperville, Illinois, USA',
'name': 'DHJJ, Ltd.',
'type': 'Firm'}],
'customer_advisories': 'Affected individuals notified',
'data_breach': {'data_exfiltration': 'Indications of data circulating on the '
'dark web',
'personally_identifiable_information': 'Names, addresses, '
'dates of birth, '
'Social Security '
'numbers',
'sensitivity_of_data': 'High',
'type_of_data_compromised': 'Personal Identifiable '
'Information (PII)'},
'date_publicly_disclosed': '2026-03',
'description': 'In March 2026, Wolf Haldenstein Adler Freeman & Herz LLP '
'announced an investigation into a data breach at DHJJ, Ltd. '
'The breach, which occurred in November 2025, may have '
'resulted in the theft of sensitive personal information, '
'including names, addresses, dates of birth, and Social '
'Security numbers. Affected individuals have been notified, '
'and there are indications that compromised data may be '
'circulating on the dark web.',
'impact': {'data_compromised': 'Sensitive personal information, including '
'names, addresses, dates of birth, and Social '
'Security numbers',
'identity_theft_risk': 'High'},
'initial_access_broker': {'data_sold_on_dark_web': 'Indications of data '
'circulating on the dark '
'web'},
'investigation_status': 'Ongoing',
'references': [{'source': 'Wolf Haldenstein Adler Freeman & Herz LLP'}],
'regulatory_compliance': {'legal_actions': 'Potential legal claims being '
'examined'},
'response': {'communication_strategy': 'Affected individuals notified',
'third_party_assistance': 'Wolf Haldenstein Adler Freeman & Herz '
'LLP (investigation)'},
'title': 'DHJJ Data Breach Exposes Personal Information of Individuals in '
'November 2025',
'type': 'Data Breach'}