Seriously though if you are letting agents do whatever they want without a PR process that requires hardware authentication or proof of presence, you are putting your code and your org at high risk.
Just curious, what do you use for this?
I built OTP Guard [1] a few years ago for exactly this problem, although I haven't seen any alternatives in the space. Does GitHub have something built-in now?
The original framing was more "local malware compromising your GitHub account" ... it never occurred to me that the malware could be a LLM. I really should update the page.
0) agent gets its own separate git user and ssh key, separate from mine
1) branch protection rules on main, only I can approve merges into main
2) any other ssh key uses (interactive login, direct git access, etc.) are ed25519-sk keys and require a touch on yubikey.
TBH, the biggest hole is that it can be unclear exactly what process is requesting a touch on the yubikey. Apple has a head start here because they can lock down the TouchID UX relatively well, but unfortunately they don’t seem to care about building a polished developer experience for 2FA on sensitive tasks.
They are probably waiting for someone else to build the right solution and then copy/steal it.
More interesting than that even, a tier of YubiKeys that does not exist outside of this cooperation.
The supported features sit between a YubiKey 5C and a Security Key C and I did not find any other way to purchase this tier.
Hardware 2FA is not a new concept and is recommended by many people for many purposes. Only the authentication token is attested, and that is the purpose of an authentication token.
The first "hardware key" is actually my Bitwarden faking a hardware key (I'm sure they'll start blocking BW because of this in the future) but it doesn't let me add a second one unfortunately.
If you’re using real yubikeys, it’s protection against losing one. If you had two from the start, you’re not at risk of losing your only way into your account when one goes missing or is stolen.
If the best models are so anticipated that people do anything to get them, seems like remote attestation fits perfectly here. There is no need to use it for lower quality models which are used by masses. Instead, it even works for marketing narrative where they do everything they can that their great models are used only those devices they allow, and no <name your country> can't easily use them. Maybe even helps setting higher price.