The combined situation

Undress.app is one of the highest traffic nudify services. It markets itself through aggressive paid social campaigns and operates a referral program that incentivizes redistribution. When Undress.app 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

Undress.app has been observed using stolen Instagram and TikTok photographs in its marketing previews. It has been the subject of UK Information Commissioner's Office inquiry since 2024. 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 Undress.app is documented through undress, which strengthens the takedown notice and supports parallel legal action.