For Desautels, once again, the issue is quickly contextualized by pure financial and reputational motives. With tech companies accused of harvesting tranches of user data, anyone could be forgiven for harboring suspicions. Chamberlain contends there’s “no incentive” for anti-cheats to go on a “fishing expedition” for users’ personal information.
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It might seem like this is even more evidence that kernel-level anti-cheats are huge vulnerabilities, and on one level they are, but most kernel drivers have similar vulnerabilities, and exploiting them requires technical skill and physical access to the computer with the driver installed.Ī kernel driver leading to an external attack might be staggeringly unlikely, but many gamers worry that this software is designed, at least in part, to provide game companies themselves with unprecedented levels of access and information about users’ machines.
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So you could take the Capcom driver and then sideload your own code,” says Nemanja Mulasmajic, who did security for Valorant and Overwatch, which allowed users to bypass “all the signature checks and all the security features the Windows had built up.” An embarrassed Capcom reverted the code shortly thereafter. “It had a vulnerability that let anyone load kernel code arbitrarily.
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In the end, Riot seemingly calculated that any backlash a kernel solution produced (and there was plenty) was still preferable to being hamstrung from fighting cheaters on even ground.Īnd if that situation were ever to have occurred, it likely already would have in 2016, when Capcom pushed out a kernel driver for the PC version of Street Fighter V. “At the end of the day, they don't want to have to put out a driver to protect their game if they don't need to.” But in the hyper-competitive FPS space, especially a tactical shooter where a single headshot can mean instant death, cheats have an outsized impact that can quickly erode players’ trust. Internally, they were like, ‘Look, this is too risky,’” says Clint Sereday, another security engineer who worked on Vanguard, Valorant’s kernel-level anti-cheat system. “Even at Riot, nobody wanted us to make a driver. Working in the kernel is difficult-it’s more specialized and requires loads of quality assurance testing because the potential impact of bad code is so much more drastic-which leads to increased expense.
Still, games studies were, and often remain, cautious about implementing their own driver solutions. Sign up for our Games newsletter and never miss our latest gaming tips, reviews, and features. Anti-cheat systems are heading to the kernel in part because that’s where the cheaters are. But the reality is that security engineers, especially those working to establish fairness in the hyper-competitive FPS genre, haven’t been given a lot of choice. It’s not surprising, then, that some people have reservations. And because of that sequestration, user-mode software has very limited visibility into what’s happening in the kernel. While faulty code executed in user mode-“ring 3,” where web browsers, word processors, and the rest of the software we use lives-results in that specific software crashing, an error in the kernel brings down the whole system, usually in the ubiquitous Blue Screen of Death. Software in this region includes the operating system, the drivers that talk to hardware-like keyboards, mice, and the video card-as well as software that requires high-level permissions, like antivirus suites. The kernel itself-sometimes called “ring 0”-is a sequestered portion of a computer, where the core functionality of the machine runs. But an increasingly vocal subset of gamers is concerned that the software meant to detect and ban cheaters has become overly broad and invasive, posing a considerable threat to their privacy and system integrity.Īt issue are kernel-level drivers, a relatively new escalation against cheat makers. In the past decade, big competitive online games, especially first-person shooters like Activision-Blizzard’s Call of Duty and Bungie’s Destiny 2, have had to massively scale up their operations to combat the booming business of cheat sellers.
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