Police Seek Arrest Warrant for YouTuber Over AI-Generated Evidence in Actor Scandal
Authorities allege YouTuber Kim Se-ui used artificial intelligence to fabricate audio evidence that derailed the career of actor Kim Soo-hyun.
Primary source: BBC World News. Full source links, newsroom standards, and correction details are below.
Fast summary
Start here
- South Korean police are seeking an arrest warrant for YouTuber Kim Se-ui for defaming actor Kim Soo-hyun.
- Authorities allege Kim Se-ui used AI to create a fake voice recording of late actress Kim Sae-ron to support false claims of an underage relationship.
- The scandal resulted in the indefinite postponement of the actor's projects and led to him seeking psychiatric treatment.

What happened
South Korean police have applied for an arrest warrant for Kim Se-ui, a prominent YouTuber with nearly a million followers, on charges of defamation. The YouTuber is accused of orchestrating a campaign that utilized AI-generated audio and manipulated text messages to falsely claim that actor Kim Soo-hyun engaged in an inappropriate relationship with actress Kim Sae-ron when she was a minor.
What's new in this update
The latest development involves the police confirming that a voice recording used to substantiate the allegations was generated by AI. Furthermore, investigators allege that screenshots of text messages purportedly from the late actress’s phone were manipulated. Police state the YouTuber knowingly spread these false claims for financial gain through his online platform.
Key details
The fallout from the allegations has been severe for Kim Soo-hyun, once one of South Korea's most successful stars. According to police filings reported by JoongAng Ilbo, the actor's 'social base and economic activities' have collapsed, and he is currently undergoing psychiatric treatment. A major project, the Disney+ series 'Knock-Off,' has had its release indefinitely postponed as a direct result of the controversy.
Background and context
The scandal began shortly after the death of actress Kim Sae-ron at age 24. Kim Sae-ron had previously faced intense online scrutiny following a drink-driving incident in 2022. While Kim Soo-hyun admitted to dating the actress for a year when she was an adult, he has consistently and tearfully denied any relationship while she was underage, eventually filing criminal complaints in March 2025.
What to watch next
The focus now shifts to whether the court will grant the arrest warrant for Kim Se-ui. Additionally, the case may set a precedent for how South Korean law handles 'deepfake' defamation and the use of AI in spreading misinformation that impacts the livelihoods of public figures.
Why this matters
This case highlights the severe real-world consequences of AI-generated misinformation on professional reputations and the legal challenges in governing digital defamation.
Reader context
This story belongs to Northstar Herald's world coverage, with related entities including Kim Soo-hyun, South Korea, Kim Se-ui, Deepfakes. The report is based on BBC World News source material.
Related coverage
Why it matters
This case highlights the severe real-world consequences of AI-generated misinformation on professional reputations and the legal challenges in governing digital defamation.
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