The combined situation

Synthesia is a corporate AI avatar platform with hundreds of stock avatars. Custom avatar creation requires identity verification, which makes it less commonly used for NCII but it has appeared in impersonation cases. When Synthesia output appears on Signal, removal proceeds through the statutory takedown process under 47 USC 223a combined with source attribution to strengthen the legal claim.

Why this combination is high risk

Identity verification for custom avatars limits NCII vector but stock avatar misuse for impersonation remains a documented issue. On Signal specifically, signal's zero metadata model is privacy protective for legitimate users but provides no platform side enforcement option for ncii victims. content can be forwarded to other signal users without trace.

How removal proceeds

Signal does not have content moderation tooling because of its end to end encryption and zero metadata architecture. Removal of content requires action against the sender directly. Source attribution to Synthesia is documented through synthesia outputs use specific avatar templates with recognizable presentation styles, which strengthens the takedown notice and supports parallel legal action.