Use it with popular services such as Facebook, Gmail, GitHub, Dropbox, Dashlane, LastPass, Salesforce, Duo, Docker, Centrify, and hundreds more. YubiKeys can run multiple protocols, so you can use the same key for almost an unlimited number of services.

The business pack YubiKey 5C consists of a tray of 50 YubiKey 5C devices.ĭifferent services use different types of security protocols.

Keep one on your keychain with your house/car key and a second YubiKey in a secure location as a backup. Simply plug in your YubiKey and tap it to log in to your computers (for Linux and MacOS), networks, and online services. Millions of people use YubiKeys for 2FA because they are the easiest to use, super secure, and affordable. It adds an extra layer of security to your account, allowing you and only you to prove your identity and gain access. This may mean either that they are 'good enough' against a state-backed hacking or that they are already compromised.Two-factor authentication (2FA) is also known as two-step verification (2SV). I would be particularly concerned with this, meaning that the vendor is of particular interest of a powerful state-sponsored hacking groups. On one hand, their software is partly closed, on the other hand, they are pretty much popular and a lot of people search them for vulnerabilities. Yubikeys in particular have a mixed reputation. It would boil down to keys being dependent on some initial seed of the random generator and a little entropy is added between key generations. here or here) because of insufficient entropy used.Īn algorithm that generates keys that are recognizable as generated by the same instance should be considered profoundly broken. In some extreme cases, the key generation algorithm has some grave bug that makes it generate repeating keys (see e.g. This is still acceptable, as long as the whole keyspace is not much reduced. In some cases, the keys can be recognized as generated by a particular software or device. This is usually acceptable, as long as the keys don't get too much predictable. It is common peculiarity in the security hardware (and software) that the keys it generates have some non-uniform distribution in the space of possible keys.

Yubikey security key u2f fido2