- cross-posted to:
- linux@lemmy.ml
131
- cross-posted to:
- linux@lemmy.ml
Ricky Mondello (@rmondello@hachyderm.io)
hachyderm.ioIf you actually read the “Passkeys are a trap. Do not use them.” post going around, you’ll find a transparent attempt to clumsily string together a conspiracy.
The post is predicated on the idea that a feature of WebAuthn called “attestation”, which is only used in high-assurance and usually corporate scenarios, and usually with physical hardware security keys, will be leveraged to hurt people, somehow.
The post posits that a website like X will bait and switch users: first, you get a passkey. Then, later, scary “attested” passkeys! This simply isn’t possible to do because attestation isn’t supported on the web for mass market, consumer authentication.
Attestation for passkeys (software-based, syncable credentials) is antithetical to their mass market goals, and would freeze out independent, non-corporate-backed credential managers. It’s an explicit non-goal of the designers of passkeys, who work together in a forum anyone can join.
And trust me, websites and apps like banks repeatedly asked for attestation at the beginning of the industry’s passkey journey. The platforms, browsers, and credential management apps have held firm that the goal of passkeys is reducing phishing and **not** some kind of trusted computing scheme. (And I will note: over my dead body!)
Besides the theory of the case being fundamentally wrong, there are several things that make the post disqualifying in terms of arguing something useful or important in the realm of security, privacy, and user authentication:
1. Intentionally presenting things that are complicated as inherently suspicious. (Delivering security by design can be complicated, yes!)
2. Describing TOTP as a “great solution” for adding security to a password-based account. When the most common threat model on the web is phishing (a word the post never mentions!), TOTP hardly buys you _anything_. TOTP is phishable.
3. Seeming to be unbothered by how many logical leaps are being taken without actually understanding the topic being discussed.
There are bad things happening in tech and untrustworthy people and companies do exist, but they’re largely in the AI space, not the “let’s stop people we love from getting compromised through phishing” space.
A rebuttal to an anti-passkey, pro-TOTP post that has made the rounds on Lemmy as well.
passkeys can perfectly be used with third party password managers. everything you say here can apply to passwords if you use the Os provided manager.
you can absolutely have 2fa with passkeys. most platforms don’t do it since it adds little value
That’s the neat point. You don’t have to use one when you enter your normal login credentials and the average user like does not use one.
But with passkeys you are forced to use one and the average user will use the default one of their vendor.
Yeah because they obviously don’t care about security (like machine compromise - that’s why there is 2FA in the first place), which contradicts all advantages of passkeys.
every single argument I’ve seen against passkeys could be said against TOTP and 2FA in general.
and yes, you could use third part TOTP managers, but as you said, the average user wont. I dont feel any argument against passkeys is particularly strong.
Who has used as argument that passkeys are phishable?
The argument is that passkeys include “attestation” as part of the official standard, which is a method explicitly intended for services to be able to securely identify what local authenticator you used with the explicit purpose of allowing the service to reject access if it’s not considered “safe”. Can you say that about TOTP?
The problem is not the general idea of passkeys… there are actually good things in the standard. The criticism was that there’s also a part in the standard that seems perfectly designed for companies to use them in anti-consumer practices.