Evidence shows Russians directing the plot and stoking tensions with fake far-right and Muslim groups.
Preston Davey died after months of sexual and physical abuse at the hands of Jamie Varley.
Sites including Instagram, YouTube and TikTok will become inaccessible for millions of children, the prime minister has announced.
The sentence of Vickrum Digwa, who was convicted of the murder of Henry Nowak, has been referred to the Court of Appeal.
Fifteen "big cats" were reported to authorities in Wales between January 2020 and July 2025.