We cleared four days, cancelled every meeting, gave five engineers unlimited agent credits, and made everyone demo live on Thursday. multifactor.com/blog/lock-in…

6 months ago, we met a team that was remarkably well aligned with our agentic security vision. Today, we're joining forces. We've officially acquired Keypo, Inc., and its founder Dave Blumenfeld is joining us as Founding Engineer, bringing his work on secure enclaves directly into our platform.

The Multifactor Challenge is live! Anyone with Multifactor can now use our Checkpoint link to log into our business checking account on Meow, where we’ve stashed $1 million in VC funding. Every dollar we’ve received from YC is in there, but we’re not worried. Our Checkpoint account-sharing system has disabled transfers and withdrawals, and our credentials are protected by Multifactor’s post-quantum-secure encryption. If the laws of math don’t fail us, our funding will be just fine. Check out the video below for the link, and be sure to follow us here for live updates.

Securely sharing any online account with AI agents. Can your password manager do that?

One-click logins to any site, on any device. Can your password manager do that?

Instantly revoke shared accounts, without having to change your passwords. Can your password manager do that?

Sharing accounts just by sending a link, *without* ever actually sharing the passwords. Can your password manager do that?

Watch this space! One week from today, we'll be putting Multifactor through the ultimate stress test. We're going to publish a link that lets *anyone* log in to our company's primary business checking account. $1M of funding — basically every dollar we have raised — will be on the line. But standing between us and disaster will be Checkpoint, our secure link-based account sharing system! Will someone try to take the money? No doubt. Will they succeed? The math says no way—and so do we. Stay tuned for more details.

We are incredibly grateful for (and overwhelmed by) the surge of recent interest in Multifactor! In the past 48 hours, hundreds of new users have signed up for Multifactor and propelled us to a #1 spot on @ProductHunt, even on a day with four YC launches. Your support and feedback mean the world to us as we continue to refine the product. Onwards and upwards! 🚀

Multifactor.com is the future of secure online account sharing. Use “Checkpoint links” to share access without exposing credentials. Grant “read-only” access to humans and AI. Easily import accounts from LastPass, Apple, or Google. Soon, let AI agents log in and take action with your permission.

🚀We sponsored an actual rocket launch! (kinda...) Our YC F25 batchmates at Wardstone (wardstone.space) are building satellites for missile defense, with frequent test flights in the Mojave Desert. "Lot of empty space for logos on those test payloads," we innocently remarked. Next thing you know, we received this video from Tobias and Sebastian. Touché, Warsdtone. Next stop, space?

Reddit gets it! Time to give @MultifactorCOM a try... ;)

What's your biggest gripe with password managers?

I can't believe this was actually this easy to do...

Should a password manager ever store all your credentials? The answer is "NO!" 🚨 ...Except for when you use Multifactor! No password manager on Earth can offer the same level of secure encryption that Multifactor can. That's because every password manager is encrypted using only a password. Passwords are weak! This is why it's always suggested to use Multi-Factor Authentication (MFA) to login. The analog to MFA for encryption is the Multi-Factor Key Derivation Function (MFKDF). This is a tool invented by the founders of Multifactor! What it lets you do is use all your commonly used authentication factors to create the key that encrypts your data. Strong 🔑 = Strong 🔒 A common question we get is: "Does this make Multifactor more difficult to use?" To which we can happily tell you: No! It's just as easy as logging in anywhere! We've done the hard work to build the secure cryptography, you can rest assured your credentials are safe with us. To see more, you can check out our site: multifactor.com and join our waitlist to be one of the first to witness the power of a portal into all of your online accounts. Likewise, this technology is open-source and being built in public: github.com/multifactor/MFKDF… github.com/multifactor/MFKDF

You've been sharing accounts insecurely all along!!! Let's see how you can do this properly using Multifactor 👇

Can't believe we get to work with amazing partners like @dessaigne at @ycombinator! The next two months are going to be MASSIVE for Multifactor and for agentic security in general 👀