“According to court filings and interviews with lawyers and scholars, the legal profession in recent months has increasingly become a hotbed for AI blunders,” reports the New York Times: * Earlier this year, a lawyer filed a motion in a Texas bankruptcy court that cited a 1985 case called Brasher v. Stewart. Only the case doesn’t exist. Artificial intelligence had concocted that citation, along with 31 others. A judge blasted the lawyer in an opinion, referring him to the state bar’s disciplinary committee and mandating six hours of A.I. training.

That filing was spotted by Robert Freund, a Los Angeles-based lawyer, who fed it to an online database that tracks legal A.I. misuse globally. Mr. Freund is part of a growing network of lawyers who track down A.I. abuses committed by their peers, collecting the most egregious examples and posting them online. The group hopes that by tracking down the A.I. slop, it can help draw attention to the problem and put an end to it... [C]ourts are starting to map out punishments of small fines and other discipline. The problem, though, keeps getting worse. That’s why Damien Charlotin, a lawyer and researcher in France, started an online database in April to track it.

Initially he found three or four examples a month. Now he often receives that many in a day. Many lawyers... have helped him document 509 cases so far. They use legal tools like LexisNexis for notifications on keywords like “artificial intelligence,” “fabricated cases” and “nonexistent cases.” Some of the filings include fake quotes from real cases, or cite real cases that are irrelevant to their arguments. The legal vigilantes uncover them by finding judges’ opinions scolding lawyers...

Court-ordered penalties “are not having a deterrent effect,” said Freund, who has publicly flagged more than four dozen examples this year. “The proof is that it continues to happen.”