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
Aug 2026Event location unknownGoogle AI Mode
In late August 2026 a colleague told a German physician, until that summer a chief physician at a hospital, that searching his name with the word for suspension in Google's AI Mode produced what read like a factual report: that he had been suspended and dismissed and had received a suspended sentence for sexual coercion. According to legal news site beck-aktuell, none of it concerned him; the AI had apparently attached facts about another former senior employee of the same hospital to his name, and the newspaper articles it linked as sources did not name him. Google said it had reviewed his complaint and would take no action, and a lawyer's warning letter also failed. On 24 September 2026 the Aachen Regional Court issued a preliminary injunction (8 O 268/26) barring Google Ireland Limited from spreading the claims through AI Mode, finding that they violated his personality rights and that Google is responsible for its AI search answers.
Contextual tracker case Medium reported severity Lawsuit Ongoing
AI involvement supported · Causal attribution established · 2 sources, 1 underlying account · Added 15/10/2026
31 Jan 2025 to 12 Dec 2025United StatesUnidentified AI drafting tool
On 12 December 2025 the U.S. District Court for the District of Oregon dismissed with prejudice the claims of plaintiffs in a family dispute over their late mother's estate and family property, as a sanction for what the court called their misuse of generative artificial intelligence, and found their continual violations of the court's Local Rules an additional basis for the dismissal. Three of the plaintiffs' summary-judgment briefs cited fifteen nonexistent cases and fabricated quotations attributed to eight real authorities. The plaintiffs had said the inaccurate citations came from reliance on an automated legal citation tool. The court found that the plaintiffs shared responsibility with their lead lawyer and that one plaintiff, a frequent self-represented litigant, was likely the person who used AI to draft the briefs. It struck the briefs, ordered the lead lawyer to pay $15,500 to the court and awarded the defendants their fees. In March 2026 it set those fees at $94,704.38, ordering the lead lawyer to pay 85% and local counsel 15%. In June 2026 it denied the plaintiffs' motion to reconsider a later ruling for the defendants on a counterclaim.
Core + contextual relations Medium reported severity Lawsuit Dismissed
AI involvement supported · Causal attribution established · 3 sources, 1 underlying account · Added 15/10/2026
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
3 Jun 2026United StatesUnidentified AI tool
On 3 June 2026 the US Court of Appeals for the Ninth Circuit fined immigration attorneys Mike Singh Sethi and William Rounds $2,500 each and suspended both from practice before the court for six months. Briefs filed in an asylum petition for review cited two cases that do not exist and attributed quotations to opinions that do not contain them. In a motion to correct, the attorneys called the errors typographical, and at oral argument Rounds twice said AI was not used. In their response to the court's order to show cause, they conceded that the errors were probably the product of unauthorised AI use by the firm's unlicensed brief writers and a failure to check citations. The court said the suspension was owed to their repeated failure of candour. The Board of Immigration Appeals then suspended Sethi from practice before the Board, the immigration courts and the Department of Homeland Security for six months, effective 13 June 2026, and designated that decision as a precedent on 1 October 2026.
Contextual tracker case Medium reported severity Regulatory Action
AI involvement supported · Causal attribution established · 2 sources · Added 14/10/2026
Apr 2025Event location unknownGoogle AI Overviews
Italian outlets report that Google's AI Overview feature told searchers that Claudio Zorzi, head of orthopedics and traumatology at the IRCCS Sacro Cuore Don Calabria hospital in Negrar (Verona), had died. According to the hospital, the surgeon is alive and operating, and the error probably came from confusion with a general practitioner of the same name who died. The false news is reported to have circulated since April 2025 and to have recurred. Zorzi said he felt uncomfortable because people who think he is dead do not look for him, and he reported the notice to the postal police. On 15 October 2025 the hospital served Google, through its lawyers, with a formal cease-and-desist and default notice and reserved a damages claim. No Google response was found. The AI Overview output itself was not inspected.
Contextual tracker case Low reported severity
AI involvement reported · Causal attribution alleged · 4 sources, 2 underlying accounts · Added 29/09/2026
Mar 2025United StatesJewish Onliner (suspected)
In March 2025 Yale placed a Yale Law School scholar, who was deputy director of a Yale Law School project, on administrative leave and barred the scholar from campus. The New York Times reports the decision came three days after a news site described as powered at least in part by artificial intelligence published a story on the scholar's connections to Samidoun, a group on a US sanctions list. Inside Higher Ed and Middle East Eye identify the site as Jewish Onliner. The scholar's lawyer says Yale's general counsel named the article as the trigger of the investigation. The scholar told the Times of not being a member of any organization that would violate US law, and the lawyer says the scholar is not a member of Samidoun. A Yale Law School representative told The National that placing an employee on temporary administrative leave while a review is conducted is the appropriate process and that the scholar's short-term position was due to expire the following month. The site says humans fact-check and that AI tools play a significant role in its work. The inspected sources do not show that AI produced the article.
Contextual tracker case Medium reported severity
AI involvement suspected · Causal attribution alleged · 6 sources, 4 underlying accounts · Added 29/09/2026
Apr 2025 to May 2025Event location unknownCoCounsel, Westlaw Precision and Gemini (reported)
In an order dated 5 May 2025 and filed on 6 May in Lacey v. State Farm (C.D. Cal.), a special master struck the claimant's supplemental briefs and denied the discovery relief she sought after her lawyers filed briefs built on unverified AI-generated legal research: about nine of 27 citations were wrong and at least two cited authorities did not exist. One lawyer's sworn declaration says the outline he circulated relied on generative AI features in CoCounsel, Westlaw Precision and Google Gemini, and that he could not tell whether particular errors came from his transcription or from a tool; co-counsel at the second firm say they used no AI tools and did not know AI had been used. The order makes the two firms jointly pay $31,100, states the client was not at fault and will not bear the awards, and imposes no penalty on individual lawyers.
Contextual tracker case Medium reported severity
AI involvement supported · Causal attribution supported · 1 source · Added 29/09/2026
19 Jun 2026 to 13 Aug 2026BrazilChatGPT and OpenAI moderation
BBC reporting describes a Brazilian man detained for 54 days after OpenAI reported messages to the FBI and Brazilian authorities. Police described a credible threat; he denied intending harm. A court released him without charges under protective conditions. The report did not include ChatGPT’s replies.
Core + contextual relations High reported severity Investigation Opened
AI involvement supported · Causal attribution supported · 4 sources, 2 underlying accounts · Added 23/09/2026
26 Aug 2026 to 28 Aug 2026SpainUnidentified Google AI tool (reported)
On 26 August 2026, WhatsApp groups in Ceuta circulated videos and images claiming that Argentine political scientist and activist Flavia Broffoni — who was in Patagonia and had not been to Spain since 2014 — was a woman filmed in Ceuta allegedly giving pepper spray to Moroccan migrants. A screenshot from one group shows that a user cropped the woman's face from the video and asked a Google AI tool who she was, with the word 'activista' as context; the answer identified her as Flavia Broffoni with details of her public profile. Broffoni received death and rape threats. La Nación's own test with the same video produced a different false identification — a student from Quilmes, with her personal data. Google Argentina said it could not confirm the screenshot came from its systems without the original link and had received no formal report. Broffoni is weighing legal action with her lawyer.
Contextual tracker case High reported severity Media Coverage
AI involvement supported · Causal attribution supported · 1 source · Added 15/09/2026