Dear Firedrakers, Firedrake users who don't have write access to the Firedrake repositories can ignore this message. Firedrake-install, firedrake-update and all Firedrake GitHub services will continue unchanged for you. For those of you who do have write access to our repositories, we plan to improve the security by requiring all members of the Firedrake organisation to use two factor authentication on GitHub. This reduces our vulnerability to someone vandalising our GitHub repositories by gaining access to a user's password. We will switch on the two factor authentication requirement on Friday 12 May. At that point, accounts which do not have two factor authentication switched on will be automatically suspended from the Firedrake organisation, which means that you will lose push access to all the Firedrake repositories. Setting up two factor authentication on your account is easy. For information, see: https://help.github.com/articles/securing-your-account-with-two-factor-authe... Regards, David -- Dr David Ham Department of Mathematics Imperial College London