Enlarge (credit: Tim Robberts | DigitalVision)

After launching Slack AI in February, Slack appears to be digging its heels in, defending its vague policy that by default sucks up customers' data—including messages, content, and files—to train Slack's global AI models.

According to Slack engineer Aaron Maurer, Slack has explained in a blog that the Salesforce-owned chat service does not train its large language models (LLMs) on customer data. But Slack's policy may need updating "to explain more carefully how these privacy principles play with Slack AI," Maurer wrote on Threads, partly because the policy "was originally written about the search/recommendation work we've been doing for years prior to Slack AI."

Maurer was responding to a Threads post from engineer and writer Gergely Orosz, who called for companies to opt out of data sharing until the policy is clarified, not by a blog, but in the actual policy language.

Enlarge / The Sony Music letter expressly prohibits artificial intelligence developers from using its music — which includes artists such as Beyoncé. (credit: Kevin Mazur/WireImage for Parkwood via Getty Images)

Sony Music is sending warning letters to more than 700 artificial intelligence developers and music streaming services globally in the latest salvo in the music industry’s battle against tech groups ripping off artists.

The Sony Music letter, which has been seen by the Financial Times, expressly prohibits AI developers from using its music—which includes artists such as Harry Styles, Adele and Beyoncé—and opts out of any text and data mining of any of its content for any purposes such as training, developing or commercializing any AI system.

Sony Music is sending the letter to companies developing AI systems including OpenAI, Microsoft, Google, Suno, and Udio, according to those close to the group.