A new "Roblox" trojan virus is now infecting PCs. If the malicious content further spreads, it can cause a wide cybersecurity threat since lots of gamers across the globe play the block-building game.

Roblox is the most popular game for children under 13 right now. But some charities and safety experts say that more children are finding upsetting and abusive content on the site. Newsround's ...