How to Share 2FA Recovery Codes Securely
Backup and recovery codes are as powerful as the account itself. Treat sharing them with the same care.
When you enable two-factor authentication, most services give you a set of backup or recovery codes. Their entire purpose is to let you back into an account when you lose your phone or authenticator, which means each code effectively bypasses your second factor. That power cuts both ways: anyone who obtains the codes can use them to defeat the very protection 2FA is supposed to provide. So the moment you need to share a recovery code with someone, for example handing off a shared team account, the delivery method matters enormously.
Why recovery codes deserve extra caution
A recovery code is a bypass key. Unlike a rotating authenticator code, backup codes are often valid until used, so a code captured from an old email or chat message can still work weeks or months later. Pasting them into a message thread, saving them in a shared note, or emailing a screenshot all create a lasting record of a factor that is meant to be tightly held. The safest handling keeps the codes out of any persistent channel.
Sharing codes without leaving a copy
A one-time link is a good match for recovery codes because it is designed to be read once and then destroyed. The codes are encrypted in your browser, the link self-destructs after viewing, and nothing remains in an inbox or archive to be reused.
- Paste only the specific codes you need to share into Burn the Secret, not your full set.
- Add a passphrase and share it through a separate channel from the link.
- Set a short expiry so an unopened link does not linger.
- Confirm the recipient retrieved the codes, then regenerate a fresh set from the account so any shared codes are retired.
That last step is the important one for recovery codes specifically: because they stay valid until used, regenerating a new batch after a handoff invalidates the ones you shared and closes the window entirely.
A note on shared accounts
Where a service supports it, individual logins with their own 2FA are safer than passing recovery codes around a team. When a genuinely shared account is unavoidable, combine a one-time link with a passphrase and a prompt regeneration of codes afterward. The tool is free, needs no signup to create a link, and encrypts everything client-side so the server never sees your codes.
Need to hand off backup codes? Create a secure link on Burn the Secret.