Sean Byrne

Earlier this year Apple denied me access to App Store Connect after deciding that I matched someone on a U.S. government restricted-party list.

I gave a talk at Cork|Sec 156 this month on the evolution of end-to-end encryption key storage, and why passkey PRFs look like the next step in that story.

Everything feels uncertain right now.

There was an interesting story this week in Wired about an unsettling development in the iPhone security world.

Most Passkey commentary stops at “better MFA”.

I’ve led coordinated disclosure processes within organizations and participated as a reporter, so I’m sympathetic to the people trying to make the process work.

The security community has been saying for years that SMS 2FA is weak.

Trevor Perrin’s talk on the TextSecure protocol, what the world now knows as the Signal Protocol, is one of the best things I’ve watched on applied cryptography.

In 1982 AT&T made a short documentary about UNIX.