Twitter accuses Microsoft of unauthorized data use and sparks potential legal battle.

Twitter sent a threatening letter to Microsoft accusing it of violating Twitter's terms of service by using its API in a number of ways that were not disclosed and violated the rate at which data could be collected. Microsoft refused to pay for Twitter's API, which is now a paid service, and used it to loop the social media company into its advertising system. Elon Musk, who owns Twitter, threatened to sue Microsoft over the issue. The conflict highlights the changing landscape of the tech industry as companies increasingly compete with each other and fight for a share of the AI market.