W&T Offshore

W&T Offshore Inc. operates as an oil and natural gas producer headquartered in Houston, Texas, United States. The company's core business involves the exploration, development, and production of hydrocarbons from offshore properties, primarily in the Gulf of Mexico. Its operational focus is on mature fields where it applies specialized techniques to extend production life. The firm serves the domestic energy market, supplying crude oil and natural gas. The 2020 Nefilim ransomware incident provides a confirmed reference point for its industry positioning as a midstream or upstream entity handling significant operational data.

On May 12, 2020, the company experienced a confirmed cybersecurity incident where the Nefilim ransomware gang targeted its systems. The attackers exfiltrated over 800 gigabytes of sensitive data, including personnel and financial records, alongside critical operational information. Following the theft, the perpetrators leaked a portion of the stolen files on the dark web and threatened further releases to pressure the company for payment. This tactic of double extortion, combining data encryption with theft and public shaming, was noted as part of evolving cybercriminal strategies during that period. The breach underscored the vulnerability of energy sector firms to financially motivated attacks that leverage stolen data for extortion, particularly amid global disruptions. The incident is a documented event in the company's history, illustrating the persistent threat landscape for hydrocarbon producers. No further details regarding the company's specific scale, ownership structure, or additional distinguishing market attributes are provided in the available source material.