Share any online account just by sending a link

Share any online account just by sending a link

2026-10-02

Multifactor in five short demos: connect an account once, share it by sending a link and its pass, decide what the link can do, watch every action live, and revoke access in one click. Nobody ever sees the password.

Connect an account to Multifactor

Connect an account to Multifactor

2026-10-01

Add an online account to Multifactor once: pick the site, sign in, and Multifactor signs in for you. After that you can open the account without its password, and share it just by sending a link.

Share an account just by sending a link

Share an account just by sending a link

2026-10-01

Share an online account by sending a link and its pass, never the password. Your teammate opens the link, enters the pass, and is signed in straight away.

Decide what every link can and can't do

Decide what every link can and can't do

2026-10-01

Every Multifactor share link has its own permissions: read only, read and write, or full access. On a read only link, voting is blocked before it reaches the site.

See every action, live

See every action, live

2026-10-01

Multifactor logs every action taken through a share link, live. Watch each page your teammate opens appear in the link's log as it happens.

Revoke access instantly

Revoke access instantly

2026-10-01

Revoke a Multifactor share link and access ends at once: the person using it is signed out mid-session. Take back access in one click.

Checkpoint: A Secure, Programmable Proxy for Sharing Online Accounts

Checkpoint: A Secure, Programmable Proxy for Sharing Online Accounts

2026-06-15

A short demo of Checkpoint, a secure programmable proxy running inside a TEE. Checkpoint terminates the encrypted connection, rewrites the traffic based on rules set in advance, then re-encrypts it on its way to the destination. Here, a rule replaces every text instance of "Apple" with "Banana."

Multifactor acquires Keypo to accelerate zero-trust security for AI agents

Multifactor acquires Keypo to accelerate zero-trust security for AI agents

2026-06-01

Multifactor has acquired Keypo, Inc., a programmable encryption company. Keypo's founder, Dave Blumenfeld, is staying on as Multifactor's Founding Engineer to integrate Keypo's technology and research into Multifactor's platform.

Multifactor (YC F25): Share Online Accounts with Humans & AI Agents

Multifactor (YC F25): Share Online Accounts with Humans & AI Agents

2025-10-14

It's 2025 and password managers aren't cutting it. Passwords, passkeys, 2FA, etc. make accounts more secure, but harder than ever to share. What if you could share any online account just by sharing a link, as easily as sharing a Google doc?

Perspectives on Security for AI Agents at Black Hat USA 2025

Perspectives on Security for AI Agents at Black Hat USA 2025

2025-08-07

Multifactor is at Black Hat USA 2025 and DEFCON 33! Are you wrestling with the security implications of Agentic AI? Come chat with us!