Perkins Coie Discloses January Data Breach After Unauthorized Access
Perkins Coie LLP, a prominent U.S. law firm, reported a data breach in January 2024, during which an unauthorized third party accessed a user account and exfiltrated files from its network. The incident was detailed in a data breach notice, though the firm has not publicly disclosed the scope of the compromised data or the identity of the threat actor.
The breach highlights growing cybersecurity risks in the legal sector, where sensitive client information and confidential case details make firms prime targets for cyberattacks. Perkins Coie, which serves high-profile clients across industries, has not confirmed whether the incident involved ransomware or other malicious activity.
As of the disclosure, the firm is likely conducting forensic investigations to assess the full impact, though no additional details on mitigation efforts or regulatory notifications have been released. The incident underscores the persistent threat of credential-based attacks and the need for robust access controls in professional services.
Source: https://www.law360.com/articles/2488509/perkins-coie-says-hacker-accessed-files-in-january-breach
Perkins Coie cybersecurity rating report: https://www.rankiteo.com/company/perkins-coie-llp
"id": "PER1781210099",
"linkid": "perkins-coie-llp",
"type": "Breach",
"date": "1/2026",
"severity": "85",
"impact": "4",
"explanation": "Attack with significant impact with customers data leaks"{'affected_entities': [{'industry': 'Legal Services',
'location': 'U.S.',
'name': 'Perkins Coie LLP',
'type': 'Law Firm'}],
'attack_vector': 'Unauthorized Access',
'data_breach': {'data_exfiltration': 'Yes',
'sensitivity_of_data': 'High',
'type_of_data_compromised': 'Sensitive client information and '
'confidential case details'},
'date_detected': '2024-01',
'description': 'Perkins Coie LLP reported a data breach in January 2024, '
'during which an unauthorized third party accessed a user '
'account and exfiltrated files from its network.',
'impact': {'data_compromised': 'Files exfiltrated'},
'investigation_status': 'Ongoing forensic investigation',
'lessons_learned': 'Persistent threat of credential-based attacks and the '
'need for robust access controls in professional services.',
'references': [{'source': 'Data breach notice'}],
'title': 'Perkins Coie Data Breach',
'type': 'Data Breach',
'vulnerability_exploited': 'Credential-based attack'}