There are plenty of cheats that are seemingly impossible to detect. I play Team Fortress 2 and there's at least one cheat there that, from what I've read, uses

There are plenty of cheats that are seemingly impossible to detect. I play Team Fortress 2 and there's at least one cheat there that, from what I've read, uses code that's unique to each instance used by a cheater. VAC seems to scan for code signatures so it doesn't detect it. This hardware cheat makes it even harder to detect since it reads and writes directly to main memory using DMA. No drivers or software needed at all. All you possibly could detect is the PCI-ID(which can be changed) and possibly the DMA if there's an IOMMU. https://blog.esea.net/esea-hardware-cheats/ https://blog.esea.net/esea-hardware-cheats/