A depraved paedophile who acted as a moderator on a dark web site dedicated to child sexual abuse material has been sentenced to six years in prison. Matthew Slate, 36, pleaded guilty to 11 criminal charges at Wood Green Crown Court and was handed a 10-year Sexual Harm Prevention Order on May 8.
Role as moderator and re-uploader
The National Crime Agency (NCA) received a tip-off about Slate in March 2025 and arrested him the following day. The court heard that Slate admitted to being a 'global moderator' for Olympus, a dark web site set up exclusively to share child sex abuse material. Operating under the username Loudechoes between April 2024 and February 2025, he enforced 'site rules' for users. Additionally, from July 2023 to June 2024, he acted as a 're-up doctor' on another site called Neverland, where he reuploaded files. Slate ran these operations from his flat near Alexandra Palace in North London.
Extensive collection of abuse images
In total, Slate amassed 87,000 indecent images, including more than 15,200 Category A images—the most serious kind. He pleaded guilty to distributing over 2,000 indecent images. The NCA revealed that Slate also financed and co-created a new image-hosting tool to help users upload abuse material. He claimed he was blackmailed into doing so but provided no evidence.
Slate accepted a further charge of possessing 55 prohibited images of children on March 15, 2025. Before being remanded, he was subject to strict bail conditions, including a ban on deleting his browsing history, using dark web software, or unsupervised contact with children.
Background on the dark web
The dark web is a part of the internet accessible only through specific software, most commonly TOR, and is highly encrypted, providing anonymity. While it has some legitimate uses, it is a hotbed for illegal activity due to its anonymous nature. Jake Moore, former head of digital forensics and a cybercrime officer at Dorset police, now global cybersecurity advisor at ESET, explained that the dark web remains highly unregulated and difficult to police. However, collaboration between law enforcement, tech companies, and international organisations can yield crucial evidence. Investigations like this require infiltrating networks and tracing suspects' movements over many hours.
Dark web forensics and cryptocurrency tracing, along with international cooperation, have become powerful tools. As technology advances, offenders who believe anonymity makes them untouchable are increasingly being caught. Encryption, for example, has been a hiding method, but improvements in quantum computing are slowly unlocking those containers, leading to more arrests.
Statements from authorities
Robert Lay, NCA Senior Investigating Officer, said: 'Slate's depravity led him to become an active member of multiple pro-paedophile forums across the dark web. He encouraged others to view, share and discuss vile crimes against children with no regard for the victims involved. He benefitted not just through his own sexual gratification but through earning kudos from other members of these sites. The NCA is dedicated to bringing the perpetrators of child sexual abuse to justice and we will use the full force of our capabilities to uncover those operating in the shadows of the dark web.'
The Internet Watch Foundation (IWF) and the NSPCC welcomed the sentencing. Head of the IWF Hotline, Ngaire Alexander, stated: 'Child sexual abuse material is shared all over the internet, on the dark and open web, and dedicated dark web child sexual abuse websites can show some of the most disturbing imagery, often featuring very young children or the most severe type of abuse. Last year, we saw an increase in the number of dark web webpages containing criminal content, but it was still a small proportion of overall pages. Most of these dark web sites are commercial, with offenders profiting from the sale and distribution of horrific images, sometimes offering subscription services. Analysts see first-hand how users show no regard for victims. Their efforts to re-upload criminal images and videos so they remain online longer only deepen the harm and suffering. It is a mistake to think that using the dark web means immunity from prosecution, and we are pleased to see that Slate has been brought to justice.'
An NSPCC spokesperson added: 'Slate arranged or facilitated the sexual exploitation of children while amassing and sharing thousands of images of young people being sexually abused. By running these dark web forums, he also enabled people across the world to view this devastating material. When images are shared online by offenders like Slate, it can be difficult for law enforcement to identify all the victims, leaving them without the support they need to process what has happened and move forward. Child sexual abuse can cause profound and long-lasting harm, so it is vital that all those who are targeted and exploited get the help they need. It is crucial that adults report any concerns they have about the safety of a child. People can contact the NSPCC Helpline on 0808 800 5000 or email help@nspcc.org.uk.'
