""had this issue gone unnoticed, it would have completely nullified all existing DMA detection and prevention tech currently on the market - including that of other gaming companies - due to the nature of this class of cheats running in a privileged area that anti-cheats typically do not run.""
""In essence, the system's 'bouncer' appeared to be on duty, but was actually asleep in the chair,""
""BIOS updates aren't exactly as exciting as looking at ban numbers, but this is a necessary step in our arms race against hardware cheats,""
""By closing this pre-boot loophole, we are neutralizing an entire class of previously untouchable cheats and significantly raising the cost of unfair play.""
A security flaw in many recent motherboards allowed PCIe-connected DMA (direct memory access) devices to bypass IOMMU protections by exploiting incomplete initialization of the IOMMU, making hardware cheats effectively undetectable by existing DMA detection and prevention technologies. BIOS updates from Asrock, Asus, Gigabyte, and MSI patch the vulnerability. Anti-cheat software such as Vanguard may require a patched BIOS before allowing play, and other anti-cheat systems may add similar checks. Closing the pre-boot loophole neutralizes a class of previously untouchable cheats and significantly increases the cost of attempting unfair hardware-based cheating.
Read at The Verge
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