A Brazilian court imposed sanctions on lawyers for including a prompt injection attack in a court filing.

in a filing — is consistently reported across independent secondary outlets (404 Media, Lexology, trade press) and is the subject of an SSRN paper on 'algorithmic procedural bad faith', but no ruling or court document is cited in English, so specifics like the exact fine amount and whether the AI actually acted on the instruction rest on secondhand accounts. The provenance here is aggregated/secondary with no primary cited, so treat the event as well-attested and the details as reported rather than confirmed.