{"schema_version":"0.10.0","id":"LR-2026-0537","record_version":1,"title":"Attorney sanctioned for AI misuse in Hyde School lawsuit","verification":{"human_verified":false,"method":"automated_gate","auto_verified":true,"score":43.5,"score_breakdown":{"source_authority":12.1,"independent_corroboration":7.0,"implicated_party_confirmed":0.0,"citation_integrity":14.0,"specificity":0.0,"completeness":3.2,"unhedged_language":5.0},"checks":{"schema_valid":true,"every_field_cited":true,"quotes_verbatim":true,"source_fetched":true,"distinct_incident":true,"dates_plausible":true,"sources_agree":true,"source_describes_incident":true,"severe_backed_by_source":true,"record_integrity":true,"eligible":true,"about_this_case":true},"gate_version":"gate-2026-10-18.7","cross_check_model":null,"cross_check_agreement":null,"duplicate_of":null,"verified_by":null,"verified_at":"2026-11-01","extraction_run_id":null,"evidence_level":{"level":"preliminary","reason":"Publisher not yet named · subject to change","original_document":null,"reports_total":1,"reports_independent":0,"reports_derivative":0,"developing":false,"disputed":false,"rules_version":"evidence-2026-10-29.1","computed_at":"2026-11-01","history":[{"date":"2026-11-01","from_level":null,"to_level":"preliminary","reason":"Publisher not yet named · subject to change"}]},"sources_hash":"3dac05dcad7718be43533579ef2c681752d6ad66afadd3d087fce14189bac165"},"system":{"model_name":null,"model_version":null,"developer":"unknown","harness":null,"tools_granted":[],"permissions_scope":null,"autonomy_level":"unknown","guardrails_present":[],"deployment_context":"unknown","tier":null,"lifecycle_stage":null,"integration_type":null,"intended_use":null,"safeguard_state":null,"production_intended":null},"event":{"date_occurred":null,"date_disclosed":"2026-05-07","incident_class":"hallucination","failure_class":null,"agent_involved":null,"secondary_failure_classes":[],"trigger":"unknown","duration":null,"detection_method":"unknown","summary":"A lawyer for a former student suing Hyde School, a Bath, Maine boarding school, filed a response to the school's motion to dismiss that contained inaccurate and fabricated legal citations. The attorney later admitted in a new filing that the errors came from writing produced by either ChatGPT or Claude, and said she had failed to review the work of a team member before filing. The federal judge ordered her to take a course on AI in the legal field and to create procedures at her firm to prevent such errors, and imposed no fine. The judge noted that AI use is not inherently an issue but that the attorney had a duty to independently confirm the citations. The attorney accepted responsibility and expressed remorse, and she must file an amended response while the case continues.","tags":[],"date_detected":null,"near_miss":null,"root_cause":"oversight","root_cause_detail":null,"failure_class_detail":null,"responsible_party":null,"adversarial_actor":null,"input_provenance":null,"time_to_contain":null,"operations_paused":null,"remediation":"Court ordered an AI legal education course and firm procedures to prevent such errors","precursor_events":null},"impact":{"direct_loss_usd":null,"remediation_hours":null,"records_exposed":null,"third_parties_affected_count":null,"severity":"minor","severity_because":"Minor test: the errors were confined to one filing by one attorney in one lawsuit and are being corrected by an amended response; no third-party system or data was stated as touched.","harm_class":[],"affected_description":null,"protected_class_involved":null,"data_categories_exposed":[],"loss_range_usd":null,"reversibility":null,"downstream_exposure_count":null},"evidence":{"sources":[{"url":"https://www.pressherald.com/2026/05/07/attorney-in-hyde-school-lawsuit-sanctioned-for-ai-misuse-but-case-will-continue/","publisher":"Portland Press Herald - Maine Sunday Telegram","date":"2026-05-07","type":"press","title":"Attorney in Hyde School lawsuit sanctioned for AI misuse, but case will continue - Portland Press Herald - Maine Sunday Telegram","archived_url":null,"attachment":"first_report"}],"per_field_confidence":{"event.incident_class":"C","event.root_cause":"C","event.remediation":"C","context.industry":"C","context.country":"C","impact.severity":"D","impact.severity_because":"D","event.summary":"C","system.autonomy_level":"D","system.deployment_context":"D","event.trigger":"D","event.detection_method":"D","system.developer":"D","event.date_disclosed":"D","context.denominator_available":"D"},"field_citations":{"event.incident_class":[{"source_index":0,"quote":"The lawyer for a former student at a Bath boarding school who is suing the institution for abuse and neglect was sanctioned this week for using artificial intelligence in a court filing, which resulted in inaccurate and fabricated legal citations."}],"event.root_cause":[{"source_index":0,"quote":"She accepted responsibility for the errors, and said she had failed to properly review the work done by another member of her team before filing the response."}],"event.remediation":[{"source_index":0,"quote":"U.S. District Judge Stacey Neumann on Tuesday ordered attorney Kelly Guagenty to take a legal education course about AI in the legal field and create procedures at her law firm to prevent such errors from happening again."}],"context.industry":[{"source_index":0,"quote":"The lawyer for a former student at a Bath boarding school who is suing the institution for abuse and neglect was sanctioned this week for using artificial intelligence in a court filing, which resulted in inaccurate and fabricated legal citations."}],"context.country":[{"source_index":0,"quote":"U.S. District Judge Stacey Neumann on Tuesday ordered attorney Kelly Guagenty to take a legal education course about AI in the legal field and create procedures at her law firm to prevent such errors from happening again."}],"impact.severity":[{"source_index":0,"quote":"Guagenty will now have to file an amended response to the motion to dismiss from October, which the judge has not yet weighed in on."}],"impact.severity_because":[{"source_index":0,"quote":"Guagenty will now have to file an amended response to the motion to dismiss from October, which the judge has not yet weighed in on."}],"event.summary":[{"source_index":0,"quote":"The lawyer for a former student at a Bath boarding school who is suing the institution for abuse and neglect was sanctioned this week for using artificial intelligence in a court filing, which resulted in inaccurate and fabricated legal citations."},{"source_index":0,"quote":"The court gave Guagenty 60 days to find a new Maine-based lawyer, which she did, but in a new filing on April 28, she admitted that the errors in that document were actually the result of writing done by either ChatGPT or Claude, two large language model chatbots."},{"source_index":0,"quote":"U.S. District Judge Stacey Neumann on Tuesday ordered attorney Kelly Guagenty to take a legal education course about AI in the legal field and create procedures at her law firm to prevent such errors from happening again."},{"source_index":0,"quote":"She will not be fined for the errors, and will remain involved in the case going forward."},{"source_index":0,"quote":"Guagenty will now have to file an amended response to the motion to dismiss from October, which the judge has not yet weighed in on."}]},"notes_on_gaps":"The sources do not state the year of the motion (last October) or of the December response, so no full dates were given. The filing date of the erroneous response, the date of occurrence, and the date of detection by a court or other party are not stated; the April 28 admission is the only specific date for the errors. The sources name ChatGPT or Claude without saying which one, so no model name or developer was recorded. The order's date is given only as Tuesday, and the article is dated 2026-05-07, which was not used as a disclosure date. The events involved a lawyer's drafting with a chatbot and no autonomous agent, so agent_involved is false and no failure class was set. Severity is minor by my judgement: the errors were confined to one filing and corrected by amendment, and the sources state no third-party system or data was touched; the sources do not state a count of affected parties. The remediation is a court order, not a change the party reported making, so it is recorded as advice; the controls it adds (B4, I7) are my mapping of the order's procedures and verification duty. The control I7 is marked missing because the judge said the attorney had a duty to verify citations, which the sources imply was not done. No financial loss, records or remediation hours were stated. [case created by the backfill: read by claude-haiku-5-5, backfill-2026-11-01.2, 2026-11-01; not yet reviewed] [2026-11-01: evidence level set: Preliminary (Publisher not yet named · subject to change)]"},"context":{"industry":"legal","org_size_band":null,"country":"US","denominator_available":false,"denominator":null,"related_incident_ids":[],"systemic_exposure":null,"shared_model_id":null,"upstream_incident_id":null,"incident_evidence":null,"regulatory":null,"coverage":null},"narrative":{"steps":[{"step":"doing","text":"An attorney representing a former student suing Hyde School used AI to help draft a court filing.","quote":"The lawyer for a former student at a Bath boarding school who is suing the institution for abuse and neglect was sanctioned this week for using artificial intelligence in a court filing, which resulted in inaccurate and fabricated legal citations.","source_index":0,"grade":"C"},{"step":"went_wrong","text":"The response to the motion to dismiss improperly cited two federal cases and inaccurately quoted Maine's human trafficking law.","quote":"In her response to that motion arguing against dismissal, Guagenty improperly cited two federal cases to support her claims, and inaccurately quoted Maine’s law for human trafficking lawsuits, among other errors.","source_index":0,"grade":"C"},{"step":"caught","text":"In a new filing on April 28 the attorney admitted the errors came from writing done by ChatGPT or Claude.","quote":"The court gave Guagenty 60 days to find a new Maine-based lawyer, which she did, but in a new filing on April 28, she admitted that the errors in that document were actually the result of writing done by either ChatGPT or Claude, two large language model chatbots.","source_index":0,"grade":"C"},{"step":"done","text":"The judge ordered an AI legal education course and firm procedures to prevent such errors, with no fine.","quote":"U.S. District Judge Stacey Neumann on Tuesday ordered attorney Kelly Guagenty to take a legal education course about AI in the legal field and create procedures at her law firm to prevent such errors from happening again.","source_index":0,"grade":"C"}],"model":"claude-haiku-5-5","prompt_version":"backfill-2026-11-01.2","extracted_at":"2026-11-01","source_urls":["https://www.pressherald.com/2026/05/07/attorney-in-hyde-school-lawsuit-sanctioned-for-ai-misuse-but-case-will-continue/"]},"analysis":{"sections":{"timeline":[{"text":"Guagenty filed a response to the motion to dismiss with improper citations and inaccurate quotations.","quote":"In her response to that motion arguing against dismissal, Guagenty improperly cited two federal cases to support her claims, and inaccurately quoted Maine’s law for human trafficking lawsuits, among other errors.","source_index":0,"when":null},{"text":"Guagenty addressed the issues and called the mistakes clerical errors.","quote":"Guagenty addressed the issues in December and called the mistakes “clerical errors” that should not “affect the merits” of her client’s case.","source_index":0,"when":"December"},{"text":"Guagenty admitted in a new filing that the errors came from writing done by ChatGPT or Claude, after the court had given her 60 days to find a new Maine-based lawyer.","quote":"The court gave Guagenty 60 days to find a new Maine-based lawyer, which she did, but in a new filing on April 28, she admitted that the errors in that document were actually the result of writing done by either ChatGPT or Claude, two large language model chatbots.","source_index":0,"when":"April 28"},{"text":"The judge ordered Guagenty to take an AI legal education course and create firm procedures to prevent such errors.","quote":"U.S. District Judge Stacey Neumann on Tuesday ordered attorney Kelly Guagenty to take a legal education course about AI in the legal field and create procedures at her law firm to prevent such errors from happening again.","source_index":0,"when":"Tuesday"},{"text":"The judge imposed no fine and Guagenty remains involved in the case.","quote":"She will not be fined for the errors, and will remain involved in the case going forward.","source_index":0,"when":"Tuesday"},{"text":"Guagenty must file an amended response to the motion to dismiss, which the judge has not yet ruled on.","quote":"Guagenty will now have to file an amended response to the motion to dismiss from October, which the judge has not yet weighed in on.","source_index":0,"when":null}]},"model":"claude-haiku-5-5","prompt_version":"backfill-2026-11-01.2","extracted_at":"2026-11-01","source_urls":["https://www.pressherald.com/2026/05/07/attorney-in-hyde-school-lawsuit-sanctioned-for-ai-misuse-but-case-will-continue/"]}}