- Kaspersky found Steam Workshop wallpapers weaponized to deliver malware via Wallpaper Engine
- Dozens of malicious “application wallpapers” downloaded tens of thousands of times, spreading backdoors, infostealers, miners, and ransomware
- Valve removed the infected uploads, but users warned attackers could easily re‑upload new ones
Steam Workshop, a community platform built into Steam that allows users to share custom content, was being used to infect gamers with malware, researchers have claimed.