Suno, the AI music generation platform, has announced it will introduce audio watermarking and fingerprinting technology to its tracks, alongside new download restrictions and updated community guidelines aimed at curbing copycat and deceptive content. The move comes as the company, backed by $400 million raised in a June Series D round, faces mounting legal pressure, including lawsuits from major labels and a German court ruling against it, underscoring growing industry demands for accountability over AI-generated music.

CEO Mikey Shulman said the watermarking tools are meant to be durable and tamper-resistant without affecting listening quality, though Suno has not specified which technology it will use or confirmed a timeline. The company has also partnered with lyrics provider Musixmatch to use its Sentinel copyright detection system, and updated its rules to ban "deceptive audio presented as real" and unauthorised use of a person's voice. Suno is currently being sued by Universal Music Group and Sony Music Group in a case coordinated by the RIAA, lost a copyright case to Germany's GEMA, and faces a Massachusetts class action following a November 2025 data breach that reportedly affected 55 million users and revealed it had scraped YouTube, Deezer and Genius to train its models.