The complaint states that Denuvo does not know voices38's real identity and identifies Reddit, Discord, and Steam accounts that it believes could help establish who is behind it.

if they don't know who they're suing, how are they able to sue them?

TL;DR: DenuvOwO reportedly disbanded after a member linked the decision to Denuvo's lawsuit against voices38, though the lawsuit does not mention or connect voices38 to the group. Known for hypervisor-based bypasses used on more than 60 games, DenuvOwO's departure may leave other groups to continue developing the publicly available technique.

Something tells me they're just going to reform under a new name or with others, just a hunch