lol, that is not how VAC works and you should know that.
As for what EAC has done, I don't know, I'm not aware that any numbers or info drops have been published. However, in the last devblog, garry said another EAC ban wave went down, so according to him it's working.
garry or EAC guys, can you tell us what the symptoms of an EAC ban are? I'm not asking for "a friend of mine" who suddenly can't play Rust, but I genuinely don't know what an EAC ban response looks like. For all I know, some of the people with EAC problem threads could be EAC-banned and I've been trying to help cheaters with a problem that is unfixable (until they get a new copy of Rust on a new Steam account) like an idiot.
And, no shit anticheat isn't going to be 100% effective. garry never promised, expected, or planned for that. If people have figured out obscure exploits and they keep them quiet enough (or DRMed up to fuck with memory-streaming tricks and all that), the code exploit itself basically has to be fixed in order to stop them unless their hack is sloppy about keeping itself hidden.
The game's in alpha, what do you expect? Shit's broken all over. Fuck, in the webplayer version, you could speedhack and fly with Cheat Engine. From what I've seen from idiots making threads, you still can in legacy, you'll just get detected and VAC banned.
I know exactly how vac works, if you have open handles to the game (extenral cheats) or are vmt hooking/jmp hooking(internal cheats) you are going to get detected IF they have a signature on your cheat or send it in for further evaluation(Very rare, haven't even heard any confirmed report of this happening to private cheats). Now cheatpunch was supposed to protect rust from it's users loading an external mono assembly but turns out you can block all communication between Facepunch and cheatpunch via your hosts file. So yea this has been a huge failure and I think they should contract an external company to create an anticheat just for rust since EAC and Facepunch have both failed at trying to produce an effective yet silent/discreet anticheat because this is honestly sad at how easy it is to cheat in rust compared to how many legit users they are blocking from playing the game. The Risk/Reward is not balanced here.