[jake-low]

> [A thank you to Let's Encrypt] Let's Encrypt's issuance in this event was technically correct, and thanks to their commitment to best practices like CT, we were able to discover our internal policy violation and take action to prevent these types of issues in the future. The security team at Let's Encrypt responded quickly and helpfully to our inquiries. Facebook continues to support the Let's Encrypt project and we appreciate their assistance with this investigation.

I continue to be impressed with the Let's Encrypt team's professionalism in their interactions with everyone in the security community. It makes me happy to see post-mortems like this one where everything went as it should have and the issue was resolved without any breech in security. Really reflects well on Let's Encrypt and Facebook's product security team.