ONEOK Investigates Alleged Data Breach Linked to Hacker Group Redact
On October 16, 2026, the hacker group Redact claimed responsibility for a potential cyberattack on ONEOK, a major midstream oil and gas company based in Oklahoma. According to reports from dark web monitoring platform Ransomware.live, the incident allegedly involved the exfiltration of 67.5 gigabytes of data, though details about the scope and nature of the breach remain unconfirmed.
Legal teams affiliated with ClassAction.org are investigating the incident, seeking input from current and former ONEOK employees and customers who suspect their information may have been compromised. If a class action lawsuit proceeds, affected individuals could seek compensation for privacy violations, financial losses, or other damages.
As of October 19, 2026, no official statement from ONEOK has been released regarding the breach, and the company has not confirmed the attack. The investigation remains ongoing, with attorneys gathering evidence to determine the viability of legal action.
Source: https://www.classaction.org/data-breach-lawsuits/oneok-october-2026
ONEOK cybersecurity rating report: https://www.rankiteo.com/company/oneok
"id": "ONE1792470472",
"linkid": "oneok",
"type": "Breach",
"date": "10/2026",
"severity": "85",
"impact": "4",
"explanation": "Attack with significant impact with customers data leaks"{'affected_entities': [{'industry': 'Oil and Gas (Midstream)',
'location': 'Oklahoma, USA',
'name': 'ONEOK',
'type': 'Company'}],
'data_breach': {'data_exfiltration': '67.5 gigabytes of data'},
'date_detected': '2026-10-16',
'date_publicly_disclosed': '2026-10-16',
'description': 'On October 16, 2026, the hacker group Redact claimed '
'responsibility for a potential cyberattack on ONEOK, a major '
'midstream oil and gas company. The incident allegedly '
'involved the exfiltration of 67.5 gigabytes of data. Legal '
'teams are investigating the breach for potential class action '
'lawsuits.',
'impact': {'data_compromised': '67.5 gigabytes of data',
'legal_liabilities': 'Potential class action lawsuits'},
'investigation_status': 'Ongoing',
'references': [{'date_accessed': '2026-10-19', 'source': 'Ransomware.live'},
{'date_accessed': '2026-10-19', 'source': 'ClassAction.org'}],
'regulatory_compliance': {'legal_actions': 'Potential class action lawsuits'},
'threat_actor': 'Redact',
'title': 'ONEOK Investigates Alleged Data Breach Linked to Hacker Group '
'Redact',
'type': 'Data Breach'}