Security

Send a Password as a One-Time Link: A Step-by-Step Security Guide

When a One-Time Password Link Makes Sense

Sharing passwords through ordinary email messages or workplace chats can leave credentials in inboxes, archived conversations, device notifications, and backups. These copies may remain accessible long after the original task is complete. A one-time secret link provides another way to transfer sensitive information without placing the password directly in the message itself.

When temporary access is necessary, choosing to send a password as a one-time link can help limit how long the secret remains available through the sharing service. This approach may suit situations such as onboarding a contractor, providing temporary account access, or helping an administrator transfer credentials. It is important to remember that the link controls access to the shared content, not what the recipient does after viewing it.

Preparing the Password for Transmission

Before creating a link, confirm that the recipient genuinely needs the password and has permission to use the associated account. Whenever possible, create an individual account with limited permissions instead of distributing a shared login. Individual accounts make it easier to monitor activity and remove access when responsibilities change.

Check that the password is current and that sharing it complies with relevant workplace security policies. Avoid including unnecessary details, such as recovery codes or additional account credentials, in the same secret. For important systems, enable multifactor authentication to provide another layer of protection if a password is exposed.

Generating the One-Time Link

Open a trusted secret-sharing service and enter the password into the appropriate field. Review the available settings before generating the link. Depending on the service, options may include burn-after-reading functionality, a time-based expiration, or passphrase protection.

Choose settings that fit the recipient’s needs. If the recipient must retrieve the password once, select one-time access when available. If the information is time-sensitive, set an expiration period that provides enough time for retrieval without leaving the secret available unnecessarily.

Check how the service defines a successful view and whether the link can be revoked manually. Do not assume that all services use identical rules or provide the same security features.

Sending the Link Through a Suitable Channel

After generating the link, copy it and deliver it privately to the intended recipient. Email or workplace messaging can carry the link, provided the actual password is not included in the message. Before sending, verify the recipient’s address or account to reduce the chance of accidental disclosure.

Avoid placing the link in public channels, broadly accessible project documents, or group conversations where people outside the intended audience might see it. A secret link can still be accessed by anyone who obtains it before the intended recipient.

For sensitive accounts, confirm the recipient’s identity through an established work contact or another trusted method before sharing access.

Separating the Passphrase From the Link

If the service supports passphrase protection, use a strong, unique passphrase. Communicate it through a separate channel rather than sending it alongside the link. For example, send the link through a work messaging application and provide the passphrase through a verified phone call.

This separation reduces the risk of a single compromised message exposing both the link and the information required to open it. Avoid using personal details or existing account passwords as the passphrase.

What Happens After the First View

With a burn-after-reading feature, the secret generally becomes unavailable after its first successful retrieval. Some services instead rely on expiration settings, while others offer both controls. Confirm the specific service’s rules before relying on them.

Once the recipient retrieves the password, they should store it in an approved password manager rather than leaving it exposed in notes or messages. A one-time link cannot prevent copying, screenshots, or other forms of recording after the secret has been opened.

What to Do if the Link Reaches the Wrong Person

If the link is sent to the wrong recipient, revoke it immediately if the service supports revocation. If the secret may already have been viewed, change the underlying password and review account activity for unfamiliar access. Notify the appropriate administrator if the credential protects a workplace system.

These steps help contain accidental disclosure and reduce the risk of unauthorized use.