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.