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A bit of background as to what Yubikey is first: Yubikey is a variation on a common type of device known as a One Time Password generator. Basically a mini-computer that generates an essentially unlimited stream of passwords, usually one per minute from a deterministic algorithm embedded in the device. The trick is that next password is predictable if you ...


One-factor authentication is no more or less secure than existing methods in itself because the password itself is not the main weakness; The flavor of the moment in security circles is man-in-the-middle. Adding two factor authentication, in use by Google products like Gmail, Outlook online, or RSA tokens was another layer of security, but here's an example ...

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