On Tuesday, a Downey man admitted in federal court that he helped fuel a deeply disturbing online child exploitation network known as "764." Prosecutors say 28-year-old Dong Hwan Kim pleaded guilty to two counts of producing child pornography tied to the extremist group and acknowledged that he recruited and coerced underage girls into creating sexual images and videos, at times threatening to share the material with their families.
Kim’s guilty plea clears the way for a sentencing hearing later this summer and adds another chapter to a growing set of federal cases linked to the same online network.
According to a federal complaint filed in Los Angeles, several underage girls told investigators that Kim bullied them into sending sexually explicit photos and videos and then used threats to squeeze out more material. Prosecutors also allege he operated an online server where he and others created, traded and shared child sexual-abuse content, while pressuring victims to engage in self-harm as a way to keep them under control, MyNewsLA reported.
What '764' Is
Federal agents describe "764" as a nihilistic violent-extremist network that targets kids online and tries to desensitize them through cruelty and exploitation. According to the U.S. Department of Justice, members of such groups share child sexual-abuse material, encourage victims to hurt themselves and use doxxing or explicit threats to force continued compliance. Prosecutors say Kim’s conduct checks all those boxes.
Court Dates And Penalties
U.S. District Judge Stanley Blumenfeld Jr. set Kim’s sentencing for Aug. 4, 2026. Prosecutors say he faces a potential prison term ranging from 15 to 60 years if the judge follows federal guidelines. Kim’s plea stems from a federal complaint and an arrest last year, as previously detailed by The Downey Patriot.
Related Cases In Southern California
Kim is not the only Southern California defendant tied to "764." In December 2025, Jose Henry Ayala Casamiro pleaded guilty to federal charges involving the online sexual exploitation of children and is scheduled to be sentenced on Aug. 24, 2026, according to MyNewsLA.
What Parents Should Watch For
Federal officials are urging parents and guardians to keep a close eye on kids’ online lives, especially when they suddenly become more secretive. Warning signs can include abrupt mood changes, unexplained distress, or a child who seems glued to a phone yet reluctant to talk about what is happening on it.
The FBI and U.S. Attorney’s offices recommend open conversations about the risks of sharing images online and reporting any suspected sextortion, grooming or threats to law enforcement right away. For more information and resources on protecting children from online exploitation, families can review guidance from the FBI.
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