Boystown (stylized in logo as BOYS TOWN) was a child pornography website run through the Tor network as an onion service.
[1] The website was investigated by a German police task force with cooperation from Europol and international law enforcement agencies.
To identify the perpetrators, police used a correlation analysis attack against the Ricochet chat protocol which was used by Boystown admins and operates on the Tor network.
The suspects allegedly acted as administrators for the website and gave advice to its users on how to evade law enforcement while using the platform.
[5] Hours after the shutdown, an unknown user posted a dump of Boystown online, as confirmed by the Frankfurt prosecutor's office.
The journalist group STRG_F had 13.5 TB of data deleted from various file hosters by December 2021, pointing out that investigators were only interested in hard drives of perpetrators but not in removing offending material from the internet.