2026United StatesChatGPT
In a 2026 Texas trial over 3M's role in the January 2020 Watson Grinding explosion in Houston, which killed three people, an engineering expert retained for 3M used ChatGPT to prepare his expert report, according to discovery records and transcripts reviewed by 404 Media and CBS News. One prompt asked ChatGPT to show how 3M was 0% at fault for the explosion. The plaintiffs' lawyers, who found a citation overlay document and then hundreds of pages of prompts, said ChatGPT produced more than 80% of the report. Under questioning, the expert acknowledged using AI to help draft the report but defended his research. CBS News reports that after the deposition 3M's attorneys removed him from their witness list, and the plaintiffs subpoenaed him to testify about his prompts at trial. The expert's lawyer said he did not delegate his opinions to ChatGPT and called public characterisations a selective distortion of the record; 3M said he was an independent witness who used AI as a tool after reaching his own conclusions. The jury found 3M negligent and the court awarded the victims $61.5 million; 3M said it would appeal.
Core concern Low reported severity Internal Action
AI involvement supported · Causal attribution supported · 3 sources, 2 underlying accounts · Added 17/10/2026
31 Mar 2026 to 11 Sept 2026United StatesIrys (reported)
A Los Angeles County Superior Court judge ordered a senior associate at Musick, Peeler & Garrett, the outside firm defending State Farm in a homeowner's lawsuit over a fire-damaged home, to pay a $999.99 sanction after the associate's motions in limine cited cases, quotations and holdings that did not exist, Law360 reported on 14 September 2026. In a declaration reproduced by Reason's Volokh Conspiracy, the associate said she used an AI program called Irys to prepare the motions, did not check some of the citations, and wrongly believed the program was cite-checked through the firm's Westlaw subscription; she confirmed seven non-existent case citations across eight motions. The plaintiff's lawyers found the citations and raised them at a status conference on 7 August 2026. The firm acknowledged citations that appeared to be AI hallucinations, and its lead trial counsel apologised to the court and the plaintiff. According to Law360, the judge had considered up to $5,000, and the amount set is one cent below the level at which California law requires a court to notify the State Bar.
Core concern Low reported severity Regulatory Action
AI involvement supported · Causal attribution supported · 4 sources · Added 17/10/2026
5 Feb 2026 to 9 Oct 2026United StatesvLex, Paxton AI and NotebookLM (reported)
In a federal trademark suit in the U.S. District Court for the Southern District of New York, the court on 5 February 2026 struck a company defendant's motion papers and entered default judgment against it as a sanction on its lawyer, after his filings repeatedly cited nonexistent cases and misattributed quotations. The lawyer said he had found and cite-checked cases with AI tools (vLex and Paxton AI) and used NotebookLM to review a later submission; the court rejected his explanations and found he acted in bad faith. On 9 October 2026 the court described the citations as produced by generative AI and ordered the lawyer to pay $38,877.59 in fees and costs to the firm of a co-defendant's former lawyer, who had reported the false citations to the court.
Core + contextual relations Medium reported severity
AI involvement supported · Causal attribution established · 2 sources, 1 underlying account · Added 16/10/2026
24 Apr 2026United StatesUnidentified AI research tool
On 24 April 2026 the Supreme Court of Alabama dismissed an appeal by two siblings in a family dispute over living trusts because their lawyer, W. Perry Hall, had filed briefs in which most of the legal authorities were misquoted or did not exist. The court said they appeared to be AI hallucinations, and at a show-cause hearing in February 2026 Hall admitted that many authorities did not exist and that he had improperly used AI to obtain them. The court ordered Hall to pay the opposing party's fees and costs of $17,200 and double appeal costs, barred him from filing in the court without a co-signing attorney and referred him to the Alabama State Bar. It said the dismissal was imposed as a sanction because of the particularly egregious facts. One justice, concurring in part and dissenting in part, objected to dismissing the appeal as a sanction for the lawyer's conduct but would have affirmed the judgment against the clients on the merits.
Core + contextual relations Medium reported severity Regulatory Action
AI involvement supported · Causal attribution established · 1 source · Added 14/10/2026
Sept 2026United StatesUnidentified image tool
The Stanford Review reported on 21 September 2026 that Stanford's Residential & Dining Enterprises (R&DE) had used AI to change the appearance of students in its advertising: a student was sent images comparing a banner with the original photograph, which he recalled a Stanford photographer taking, and found he had been removed and replaced by an AI-generated Black woman, while the two students beside him were made to appear visibly thinner. Stanford confirmed to The Stanford Daily on 23 September that R&DE used generative AI to modify the appearance of several students in the image; the Daily reported that the students' clothing was changed into Stanford merchandise, two students' faces were slimmed and one student's race, gender and appearance were entirely changed, and the university said the alteration and its non-disclosure violated its policy prohibiting AI in producing or altering images of Stanford people; the banner at the Governor's Corner housing centre was taken down and staff training promised. On 24 September NBC News reported the university's statement that the alteration was 'a serious error in judgment', that it had apologised to the students whose images were altered or erased, and that it had opened an investigation. The replaced student, who first found the edit funny, said that seeing his identity changed and being left out made him feel 'silenced and erased from a representation that was supposed to include me', that it was upsetting, and that he was exhausted by the national media attention. According to the student, the original photograph was taken at a 2024 Lunar New Year dinner in a campus dining hall and had been used unaltered in earlier promotional material.
Core concern Low reported severity Internal Action
AI involvement supported · Causal attribution established · 4 sources, 2 underlying accounts · Added 25/09/2026
19 May 2026United StatesUnidentified voice-cloning tool (suspected)
A married couple in their sixties buying a US$460,000 condo in Hudsonville, near Grand Rapids, Michigan, received an email on 19 May 2026, days before closing, telling them to wire US$66,026.92 for the down payment and closing costs within 24 hours. The email listed a phone number differing from their loan officer's by two digits, and the husband then received a call confirming the instructions in a voice that sounded just like the loan officer. The couple borrowed from family and other sources and wired the money. The day before closing their real loan officer sent the actual statement; the closing was cancelled hours before signing and the money was gone. The husband now believes the call came from a spoofed number using AI-assisted voice cloning; Tyler Adams of CertifID, which is working with the couple and federal officials, said someone's email in the transaction was probably compromised and that the scammers likely cloned the loan officer's voice from social-media clips. The sender's address had two extra letters ('UnitedsMortgages' instead of 'UnitedMortgage'). Neither the lender nor the loan officer is accused of complicity. The couple later completed the purchase in early June from their mutual fund, reported the loss to the FBI's Internet Crime Complaint Center, and describe lasting apprehension and have discussed delaying retirement. CNN reported the case on 15 September 2026; the account the money went to has since closed.
Core concern Medium reported severity Investigation Opened
AI involvement suspected · Causal attribution alleged · 2 sources, 1 underlying account · Added 20/09/2026
Jun 2026 to Aug 2026United StatesUnidentified image tool
Florida police arrested a man in September 2026 and charged him with creating and promoting altered sexual depictions of a woman, sexual cyberharassment and stalking. Police say a forensic examination of his devices showed he used AI to make sexually explicit images of her, some of them from photographs taken from social media and other online sources. They say several more women may have been depicted. The charges had not been tried at review.
Core concern High reported severity Criminal Charges
AI involvement reported · Causal attribution alleged · 4 sources, 2 underlying accounts · Added 20/09/2026