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 4chan, 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 4chan specifically, 4chan boards including /b/ and /soc/ have historically been primary distribution points for ncii. threads expire quickly but content is preserved in third party archives that mirror entire boards.

How removal proceeds

4chan threads expire automatically. Active removal requires emailing dmca@4chan.org with the thread URL. Archive sites such as warosu and archive.4plebs require separate filings. Source attribution to Undress.app is documented through undress, which strengthens the takedown notice and supports parallel legal action.

Choose your legal action

Undress.app on other platforms