Nice to see anti-cheats working and protecting Linux players from hacks, by preventing them from actually playing the game.
Hard to have sympathy for Ubisoft the company as they are regularly used as an example of the most anti-consumer practices out there. But the whole situation is a mess, and if anything, it is probably the consumers that will end up suffering the most for this.
It's not random bans, the nicknames are words from longer text. It's lyrics from Shaggy - It wasn't me.
The line "How could I forget that I had given her an extra key?" comes to mind. Maybe someone left an API key laying around somewhere? Although I could be giving the hackers too much credit...
Maybe the mongo db exploit from two days ago?
Somebody else said some Postgres dumps are available, not sure if they are even using mongo. But maybe mongo was the start of the chain.
Sweet, can we open source Rainbox 6 Raven Shield?
If they do, would this be the first time source code from a major game publisher has been leaked?
lol leakier than a sieve.
Per the tweet linked in the article there were also random bans in addition to the ban feed shitposting.
Copy of tweet:
>@KingGeorge
>Seems like R6 is completely fucked. It’s unreal how bad.
>Hackers have done the following.
>1. Banned + unbanned thousands of people.
>2. Taken over the ban feed can put anything.
>3. Gave everyone 2 billion credits + renown.
>4. Gave everyone every skin including dev skins.
>5:09 AM · Dec 27, 2025
Global game messages being used to meme - reminds me of Team Fortress 2 rings.
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Saw a video earlier today with the lyrics of Billie Jean by Michael Jackson too.
It's a shame this game has to pander to eSports fanatics rendering it into a completely hollowed out soulless experience. From the early days of Operation Chimera to selling half of your stake and IPs to Tencent, Ubisoft has seen it all.
> It's a shame this game has to pander to eSports fanatics rendering it into a completely hollowed out soulless experience.
There have been many victims of the eSports neuroticism. League of Legends is probably the most extreme example I can come up with. You will eventually get banned from the game if you choose the "wrong" play style. You don't even have to cheat or play poorly. Overwatch suffered a very similar fate - They removed a player slot to force it to fit the "5 man" meta. In the case of OW, the changes proved so unpopular they had to literally delete the original title from everyone's PC to force use of the only remaining option.
Not much good happens where people are treating video games like a hobby or even job. Last time I played that type of game was csgo in college, never again.
Ubisoft kept making garbage and sacrificed their IP’s for the sake of keeping the company alive…
It was doomed.
+1. Can’t believe how they held amazing IPs and then milked them to death while lowering the quality game over game. Whether it’s far cry or assassin’s creed, all the later iterations are worse than the series start.
I’m still bitter at them for canceling XDefiant… it wasn’t a COD killer but it filled a comfortable niche and had potential.
>”too far away from reaching the results required to enable further significant investment”
That’s the statement they said when they shut it down. Ubisoft only had one goal all of 2010s, to turn item shop marketplace micro transactions into their primary business. They failed. They failed because they forgot why they existed. So let’s all make them remember.
This game was amazing at launch, recently tried it again and it’s become trash
https://x.com/vxunderground/status/2005008887234048091
Here's the word on the internet streets:
- THE FIRST GROUP of individuals exploited a Rainbow 6 Siege service allowing them ban players, modify inventory, etc. These individuals did not touch user data (unsure if they even could). They gifted roughly $339,960,000,000,000 worth of in-game currency to players. Ubisoft will perform a roll back to undo the damages. They're probably annoyed. I cannot go into full details at this time how it was achieved.
- A SECOND GROUP of individuals, unrelated to the FIRST GROUP of individuals, exploited a MongoDB instance from Ubisoft, using MongoBleed, which allowed them (in some capacity) to pivot to an internal Git repository. They exfiltrated a large portion of Ubisoft's internal source code. They assert it is data from the 90's - present, including software development kits, multiplayer services, etc. I have medium to high confidence this true. I've confirmed this with multiple parties.
- A THIRD GROUP of individuals claim to have compromised Ubisoft and exfiltrated user data by exploiting MongoDB via MongoBleed. This group is trying to extort Ubisoft. They have a name for their extortion group and are active on Telegram. However, I have been unable to determine the validity of their claims.
- A FOURTH GROUP of individuals assert the SECOND group of individuals are LYING and state the SECOND GROUP has had access to the Ubisoft internal source code for awhile. However, they state the SECOND GROUP is trying to hide behind the FIRST GROUP to masquerade as them and give them a reason to leak the source code in totality. The FIRST GROUP and FOURTH GROUP is frustrated by this
Will the SECOND GROUP leak the source code? Is the SECOND GROUP telling the truth? Did the SECOND GROUP lie and have access to Ubisoft code this whole time? Was it MongoBleed? Will the FIRST GROUP get pinned for this? Who is this mysterious THIRD GROUP? Is this group related to any of the other groups?
I used to work for Ubisoft, though not on Siege- I have met and had detailed conversations with their lead architect though; truthfully I remember little of those conversations.
Regarding the second group and access to source code; this is unlikely for a combination of four reasons.
1) The internal Ubisoft network is split between “player stuff” (ONBE) and developer stuff.
2) The ONBE network is deny by default, no movement is possible unless its explicitly requested ahead of time, by developers, in a formal request that must be limited in scope.
3) ONBE to “developer network” connections are almost never granted. We had one exception to this on the Division, and it was only because we could prove that getting code execution on the host that made connections would require a long chain of exploits. Of course that machine did not have complete access to all of the git repos.
4) Not a lot of stuff really uses git internally. Operations staff and web developers prefer git strongly; so they use Git. But nearly every project uses Perforce. Good look getting a flow granted from ONBE to a perforce server. That will never happen.
Siege, like The Division, worked against Ubisoft internal IT policies to make the product even possible. (IT was punishingly rigid) but some contracts were unviolatable.
The last I heard, Siege had headed to AWS and had free dominion in their tenant, but it would need Ubiservices (also in AWS) and those would route through ONBE.
I’m not sure if much changed, since a member of the board is former Microsoft and has mandated a switch to Azure from the top… But I am certain that these policies would likely be the last to go.
I wonder how many times former Microsoft people demanding switches to MS infrastructure are still actually working for Microsoft.
I mean, I worked for Nokia in 2011..
.. you don't have to tell me.
Yes, that was a particularly dirty episode. I wrote about it when it happened.
https://jacquesmattheij.com/microsoft-just-bought-nokia-for-...
I think I got one prediction wrong but the rest stuck.
Nothing highlights how pointless e-sports items are more than a real dollar value for a player base of all of them. The entire global GDP is as an order of magnitude roughly $100 trillion. So this $340 trillion figure is 3.4 times planetary total economic output - meaning the theoretical value of Rainbow Six cosmetics exceeds what the entire human civilisation produces in a year. Multiple times over. You'd be valuing pixelated gun attachments higher than annual agricultural output across all nations, all manufacturing, all services, everything.
I bet it appears unchallenged at some point in a court (or insurance) document though.
While I understand what you're saying, it's pretty clear what is meant is "$X worth at the price they currently sell for". When there's a story about an object in space made of gold worth 100s of trillians of dollars, nobody believes it would really sell for that much if we captured it and mined all the gold; because the value of gold would plummet based purely on it's existence.
But I agree with you that it would be put into a court document as "it cost us this much" for the full amount, vs the amount they were likely to ever be able to sell (and can't, now that everyone got it for free, so the value is $0)
and yet, most people use this same measure for market capitalization of companies.
The market cap is unambiguous, a more correct estimate of "how much to buy all the shares?" is situational and would just distract from getting the point across.
Not really. If a company were to manufacture a substantially large number of shares out of nothing (no additional investment money or other value entering the company) then the market cap would not go up. It would stay the same and per-share value would go down.
The market is mostly reasonable about who can and will sell their shares. If a big mover does sell a lot of their shares at once, the price will fall. Most big holders will slowly sell off shares for this reason.
In the other direction, it’s also understood that the cost to acquire all shares of a company is more than the market cap of a company. This is why you see acquisition prices being significantly higher than the last funding round valuation, or public shares popping on announcement of an acquisition attempt.
You could achieve a similar sum by adding balances out of thin air to random bank accounts, which is comparable to what happened here.
The valuation is based on them hypothetically selling the same quantities that the hackers gave away at their retail prices, which of course no one believes they would ever actually sell that much.
This has the air of a parody spy caper where the various people who have broken in keep tripping over each other.
The source leak is really interesting, though. We don't often get to see game source, and it often has surprises in.
> Will the SECOND GROUP leak the source code? Is the SECOND GROUP telling the truth? Did the SECOND GROUP lie and have access to Ubisoft code this whole time? Was it MongoBleed? Will the FIRST GROUP get pinned for this? Who is this mysterious THIRD GROUP? Is this group related to any of the other groups?
This read to me like the end of a soap opera. Tune in tomorrow to find out!
Can’t help but laugh a bit. Not a great day for Ubisoft. Hopefully this didn’t ruin the holidays for too many employees. That would absolutely suck to get a call in for this.
> Will the SECOND GROUP leak the source code? Is the SECOND GROUP telling the truth? Did the SECOND GROUP lie and have access to Ubisoft code this whole time? Was it MongoBleed? Will the FIRST GROUP get pinned for this? Who is this mysterious THIRD GROUP? Is this group related to any of the other groups?
Find out in the next episode of... Tales from Cyberspace!
At least it's webscale.
> Players across PC and console are being urged by the community to stay offline, as reports continue to surface of accounts receiving billions of in game credits, rare and developer only skins, and experiencing random bans.
Regardless if this is true or not, and how it works exactly, I find it an interesting scenario.
For players: should I go online to maybe get gifted tons of ingame valuables while risking a ban? It turns playing into a gamble.
If I take on the hackers' view, I would find it exciting to dish out rewards and punishment at random on a large scale.
The attackers better hope they fully hid their tracks - this is a bold hack, and such an level of overt cybercriminality with financial damages will result in a decade in prison if caught.
Four attackers present in a system at the same time?
How?
Misconfigured database that was publicly accessible, vulnerability/exploit dropped around the same time.
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This is the nightmare scenario for live-service games: once the integrity of progression and bans is compromised, trust evaporates fast. Rolling back “billions of credits” is easy compared to undoing random bans.
My heart goes out to the devs forced to return to work to solve these issues. Numerous groups claiming numerous exploits - mostly MongoBleed.
One has to wonder: why didn't anyone anticipate this happening? Surely the moment this exploit was discovered the team would've locked it down immediately?
If this is a result of that vulnerability, Ubisoft only have themselves to blame. Our support contacts ensured that we knew about the vulnerability as early as possible and gave us a clear guide to remediation for our self-hosted clusters. Our Atlas clusters were automatically patched before this was announced publicly. You'd have to be running your database open to the internet (already a mistake), ignore the advice to simply turn off zlib, and ignore the fixed versions that have been available for over a week.
If you're going to be in the business of running your own critical infrastructure, you better have spent a lot of effort planning for these situations, because they are inevitable. Otherwise, it's easier to just pay a vendor to do it for you.
It appears to be from the mongo db exploit. Sort of like Heartbleed from a few years ago.
I remember when gta5 was getting hacked left and right when it was released. People would just hand you millions in in game currency and you’d get to unlock all the hypercars and military vehicles. Really made the game fun removing the grind and pay to win and allowing everyone to do anything. And it gave people a chance if someone was dominating a lobby with something broken or overpowered to actually fight back fire with fire.
This is why security actually matters in game development.
I wonder if they could push out an update. That would be super scary.
That depends, they might just fix some bugs and call it a day. There would have to be a trial of the pyx for sure to figure out what got changed and by who.
I think GP is saying that if the attackers can push an update it will be scary.
Yes, I got that.
Ubislop, Ubislop never changes. Never trust a Ubislop
Rainbowhood
poured way too many hours into this game long back before it became too painful to play. this almost made me go back and check on the madness but unfortunately the servers are taken offline.
while i don't agree with how devs and the publisher works on community feedback, it is still miles better than what EA does. not that it is a high bar to clear.
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Streamer[1,2], formerly pro gamer[3]. “Creator” here is a clipping of “content creator”, an overtly ad-industry term that makes me a little sad(der) each time I hear it but is unfortunately universal nowadays, especially for people making videos (as we don’t really have another umbrella word for that).
[1] https://www.youtube.com/channel/UCsHlla-bq0C_2OtEy8s2_Sg
"Prominent" being sub 1000 views on YouTube?
A million subscribers on Twitch?
Fair. Didn't check Twitch.
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"That wording has been met with heavy backlash from players, many of whom believe Ubisoft is attempting to downplay the severity of the situation."
Come on it is just a game (◔_◔)
A 9 year old random FPS game.
WTF happened to non-shooter games? I am so bored of these FPS variations.
This is like complaining all modern movies are superhero movies. It’s hard to think that unless you’re hardly looking at all, or have fairly narrow taste and aren’t counting most of the medium.
We're currently in a golden age of Indie games catering to hyper specific niches. Ignore all AAA games and you'll find absolute gems.
Some very fun indie games I've been playing this past year (lots of early access):
- Hexarchy / Rogue hex (Civ-like)
- The Last Caretaker
- Captain of Industry (factorio-like, was posted here on HN by dev awhile back)
- 9 kings
- Super Fantasy Kingdom
- Manor Lords
- Astronomics
- Heart of the Machine
Those games have 100x to 500x smaller budgets than the AAA-games. Yes, they often have cute ideas, but, like a blockbuster movie, 99 times out of 100 you need a solid budget to make a solid movie/game.
If you want AAA games, you are going to have a safe game. You get the same with movies - Bigger budgets cause safer behavior with less risk taking. You wind up with a pretty game, a somewhat safe story (that they think will sell) and gameplay they think is just good enough to keep you going.
It isn't that the other games are bad, though. It isn't like we are talking "handheld camcorder student-written movie" vs "polished hollywood blockbuster" but more.... Beautiful painting by a mostly unknown artist vs beautiful large, publically displayed and privatly funded artist. Big budgets get you more assistance and more/better tools and more space and more human help and more connections.
It is probably important to remember that a large portion of a blockbuster's budget is advertising. Advertising is often 50-100% of the production budget and I'm guessing AAA games have similar advertising budgets. I'm not sure how a large advertising budget gives you better products, though it might get you more folks if your game is online.
Of course, I'm guessing if you limit your search to FPS games, your experience might be a different.
Wikipedia has a list of the most expensive video games to develop, with a lower limit of $50mil. https://en.wikipedia.org/wiki/List_of_most_expensive_video_g...
The top of the list is Genshin Impact, although it'll probably be displaced by GTA6 soon - that one's estimated to come in at $1.5-2 million. There's multiple FPS games on there but there's some pretty expensive open-world games too.
I love that E.T. from 1982 stays on the list because of inflation. Adds some perspective.
yeah, sorry :)
> 99 times out of 100 you need a solid budget to make a solid movie/game.
Sure, but 1 in 100 still gets you dozens of games a year now. There's plenty of genres where the top titles are nowhere near an AAA budget: Hades 2, Silksong, and Claire Obscura all being popular examples from this year, and Factorio being another well known example around here. Even simpler games like Balatro and Vampire Survivor are plenty of fun for some people.
The biggest studios have rarely been the ones producing the best work - budget gets you fancy cinematics and a beautifully rendered 3D world, but it doesn't make level design go any faster. It could plausibly buy better writing, but that requires all the executives to back off and trust the creatives.
And for what it's worth, the big studios are all happy raking in money on mindless remakes - it keeps working for them.
I would argue clair obscur is actually a shooter game seeing the variety of op builds
If 1% of indie games are solid, and all AAA game are solid, and there are 100 times more indie games than AAA games, then there would still be the same amount of solid indies as there are solid AAA games. As it is, I think for every good AAA game, there are somewhere between 50 and 500 great indie games.
Finding them is slightly harder, but absolutely worth it.
In any case, complaining about how many games there are out there that are not your thing is a waste of time. Much better to define what you like and look for recommendations from people who like similar games. Who care how many FPSs are released if you don't like FPSs? If you like RPGs, find RPG gamers and ask them what's good. Substitute for any genre; there is no genre out there that's not getting more releases than you could possibly play.
I've played the above games at least 100x more than I've played any AAA titles this year :)
Hopefully, AAA games era is coming to an end.
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I think he is saying where is the creativity in the AA+ space. Which still might be a lack of depth / breadth of search, or platform exclusive content. Not everyone can own all the consoles.
I play non FPS video games almost every night. There are so many great games available.
Yes. I tend to lean to MMOs, ARPGs, and survival/building games.
Play Hades 2!
Maybe check out game awards finalists
IMO the vidya gaem awards [0] are far superior to the game awards.
Maybe you can give a bit of context why you feel that way? Dropping a 2+ hour, <2000 views, 4chan video without context isn’t really the type of comment HN is looking for as far as I can tell
I checked them out. I guess I just miss a time when Falcon 3.0 and https://en.wikipedia.org/wiki/Stunt_Island sold really well.
Stunt Island was pretty good. However, there are more unusual games out there with reasonable budgets, like Death Stranding, The Talos Principle, The Outer Wilds, Portal and X4:Foundations. Even games involving shooting like Control or Alan Wake 2 are driven by unusual story telling.
We've come a long way in the past 30 years
Summing up the entire FPS genre as Doom-like is unfair and discredits you more than anything else. Heck, even Doom and Quake are wildly different.
FPS haven't been under the spotlights for a while, these days it's mostly MOBAs.
I do like Dusk (and most New Blood releases) if that's what you mean
Miss falcon 3.0? Go with Falcon BMS. For any genre of games there is a modern remake and community these days.
I literally discovered a completely free and open source Total Annihilation/Supreme Commander remake last month which is great for nostalgia’s sake.
These changes are occurring in a server backend database. They’re not client side cheats.
The people receiving the credits aren’t even the ones initiating the changes.
Also many anti-cheat packages do have Linux versions. The primary reason you’re not getting ports for Linux is because companies don’t want to do the port and support all versions of Linux clients they would encounter in the very tiny number of additional installs.
Proton is a single build target, and it's just the Windows build target.
Valve maintains a 'Steam Runtime', which is similar to a docker container, to ensure it's easy to develop games that run on many distributions.
Exactly, this argument wasn’t a good one 10 years ago and it definitely isn’t one now.
The problem is kernel level cheats, can't defend against those from pure userland.
Oh those are already here, Its why Battlefield needs Secureboot turned on so it can use the IOMMU to protect the game kinda
Games using Easy AntiCheat can opt in to Linux support. Arc Raiders runs on Linux (but not in VMs) whereas Fortnite does not, because Epic has chosen not to support Linux. Ironic given Tim Sweeney's supposed anti-monopoly stance.
Sweeney isn’t anti-monopoly, he’s pro-Sweeney. He sees an opportunity to let others do the work and investment to build platforms, then selectively swoop in to compete once the risk and investment pay off.
It’s not a bad business model if he can get the courts on his side: let others spend billions and take risks, then cherry pick the successful platforms and compete with their distribution using a cost basis that doesn’t have those up-front costs and risks.
> He sees an opportunity to let others do the work and investment to build platforms, then selectively swoop in to compete once the risk and investment pay off.
Sure. Just as long as you agree Google and Apple let others do the work and investment to develop new games, apps and media, then swoop in and demand a cut if the risk and investment pay off.
Their hardware, huh?
You're right, customers don't really own an iphone, even if they've paid $1000 for it.
He sees an opportunity to let others do the work and investment to build platforms^H^H^H^H^H^H^H^H^H apps, then selectively swoop in to compete once the risk and investment pay off.
If that's not a flawless description of a walled-garden app store, I can't imagine what would be.
Tim Sweeney is anti other-people’s-monopoly. He’s happy to support his own.
> because Epic has chosen not to support Linux
Because Epic doesn’t want payhack configs to be advertised in whatever leaderboards Fortnite has, like CS2 had for a while.
Fortnite is easy to run in a hypervisor and also cheaters are using hardware DMA to cheat these days anyway. The proposition that Linux enables more cheating relative to Windows is unproven.
> Ironic given Tim Sweeney's supposed anti-monopoly stance.
This doesn't really make sense. If you are implying he is FOR monopoly, he would want the game on every possible platform right? He loses money by not having more players playing his game.
That's why it's ironic. Maybe you're missing the context of the iOS App Store case, which is why he is supposedly anti monopoly.
The person you replied to obviously referred to the Windows monopoly.
This hack has nothing to do with client cheats.
"kernel anti-cheat" is actually a re-branding of "anti-(non steamdeck)-linux" software, probably to please msft (since sole beneficiary). We all know they are inefficient and weaponized by hackers.
You know on linux there is a feature for a process to snoop into another process, that for the same user (non root), can be use for anti-tampering: with a proper "security" team, as all live-service games should have, you can give hell to hackers without a kernel module...
> We all know they are inefficient and weaponized by hackers.
Name an exploit in EAC/BattlEye/Vanguard/FaceIT/whatever other big name anticheat middleware (though Vanguard and FaceIT don’t sell their services I think) that has actually been used for anything.
Genshin Impact’s driver got used as a vulnerable driver that one time, yeah. EAC had an exploit to inject your own code into processes, but that quickly got patched (https://blog.back.engineering/10/08/2021/).
ESEA's anticheat was used to mine Bitcoin on the players' computers. They are/were a major competitor of FaceIt. They supposedly had to pay a $1 million settlement over it.
So not an exploit, but even worse.
Well, I read HN. I did stop counting.
Unless you beleive in the conspiracy of AI generated news on HN.
You are the same type of guys who is going to try to sell 'computer security' as a deliverable, thing which does not exist.
Please, stop that.
How trivial is it to pretend to be a steam deck?
In what context? To show up at work and convince everyone you’re a steam deck?
Thats probably pretty difficult.
Easy enough with the right costume and plenty of confidence.
Man, even "Area 51 has aliens" is a better and more backed up conspiracy theory than this. Kernel AC isn't to please MS, nor is it to shit on Linux/Steam Deck. They don't matter. They're inexistent. They're a blip of very vocal users that keep believing that Proton is going to save them from EA making shit games.
KACs exist because they want to have higher privileges to not be injected into, closed or otherwise touched by any other process. That's also why a bunch of them have started to ask for Secure Boot, so that they can guarantee at least some chain of trust that ensures you've probably not tampered with your machine.
Your Linux example 1/ turns anti cheats into not only something that analyzes what runs on your machine, but actively tries to attack it, which is the textbook definition of malware, but also a gigantic liability should you happen to say, write into word.exe because you fucked up and thought it was a cheat. 2/ turns it into an infinite game of chasing each others with you injecting into cheats, cheats injecting into you, back and forth. In addition, you're running on an actively hostile machine with a hostile user that _wants_ to fuck over your anti cheat.
Please do some proper research on the subject.
A user level anti-tampering software (and more with such linux feature) is not a kernel module which is weaponized by hackers.
Kernel anti cheat in the client are the strongest form of protection by far, your comment makes no sense, anything userspace is easily spoofed. You can create a driver ( module ) that intercept calls and that is completely invisible to userspace processes.
The default security measures on Linux are pretty bad compared to windows, it's not even close. People like to bash windows but they have a way better security model.
1 - kernel module from anti-cheats are weaponized by hackers.
2 - if I recall properly, that linux feature is a direct mapping of the target user process allowing extreme dynamicity in time, performant, and much more powerfull mechanisms than basic 'calls'. Namely hell for hackers if a live service game has a proper "security" team, all that without a kernel module.
> GameDevs don't actually like paying a shit load of money for anti-cheat (that also breaks their debugging systems and causes bugs: a wonderful combination)... so if you've got a better way: join the industry and fix it. You'll be a moderately wealthy person.
I got a better way... just look at the past. Back in ye goode olde UT2004 times, there was no random matchmaking / ranking bullshit that removed the social element, game licenses cost money, people ran their own servers, and if you pissed off server mods enough, no matter if you were a cheater, a suspected cheater, or just an asshole, your serial got banned - sometimes, across a fleet of servers that shared ban lists. Cheating had costs associated.
But of course, that means you can't lure in whales with free to play games and loot them via microtransactions any more...
If companies have the ability to control the binaries that run on your PC, and prevent you from running the ones you want, you're cooked.
What are you talking about?
1 - kernel anti-cheats ARE weaponized by hackers. This is not a matter of discussion unless you are into the AI generated HN news conspiracy.
2 - this linux feature should provide (if I recall properly) a very complex and flexible (not limited to "calls"), and performant, set of interactions between a set of anti-cheat processes and the set of game processes. All that as being non-root priviledge (I think you must be have the same effective user id). The actual and real parameter is the level of competence and creativity of the "anti-cheat" team which is a requirement of any "live-service games" with frequent updates.
3 - for FPS games where aiming skill is critical, anti-cheat are close to useless due to "external" AI based aim assist hardware.
I’ve seen so many cases of cheaters online where even the most braindead of checks would neuter most cheats:
Are they moving faster than conceivably possible by a real player? Even the most basic (x2-x1)/t > twice the theoretical will catch people teleporting or speed hacking.
Is their KDR or any other performance metric outside 5 standard deviations from the mean?
Here’s one: is everyone they encounter reporting them for cheating along with one of the above? Do people leave their matches constantly?
Defining and detecting objectively impossible things is not impossible.