STP Nuclear Data Breach Hits 1,173 Texans [2026]

According to GovTech, STP Nuclear Operating Co., a nonprofit that runs the South Texas Project Electric Generating Station near Bay City, notified the state attorney general's office[1] of a data security incident affecting nearly 1,200 Texans.ClaimDepot reports that 1,173 Texas residents were identified as affected in a filing dated Oct. 28, 2026.[2]GovTech reports that the compromised data includes names, Social Security numbers, birthdates and other personal information, according to the posting on the attorney general's website.[1] The outlet adds that the posting said affected individuals were notified by email.[1]According to GovTech, the notice did not indicate if the breach also affected the plant's operating or safety systems[1]. A Nuclear Regulatory Commission spokeswoman told the outlet that the agency "remains satisfied that the South Texas Project plant continues operating safely and securely"[1].Shattered.io reports that "the cause is unknown"[3], and says it will update its analysis if STPNOC, the state or the owners publish more.[3]The Texas Attorney General's office says state law requires organizations to report breaches that affect 250 or more Texansno later than 30 days after the discovery of the breach.[4]The Bay City Tribune reports that the plant is owned by Constellation Energy, which holds a 44% interest; CPS Energy, with 40%; and Austin Energy, with 16%.[5]