This is a browser setting which (I believe) is off (mac webkit only?) by default.

## Safari Preferences
Press Tab option 
![Safari](https://f.cloud.github.com/assets/747616/65043/1c2a7f9a-5e67-11e2-9aea-b9841b49c2a6.png)

## Chrome Settings
Pressing Tab option
![Chrome](https://f.cloud.github.com/assets/747616/65042/1bb92ffc-5e67-11e2-81f4-180a66d754d1.png)

I don't have an issue tabbing through the links in the dialogs. The idea to not set the focus inside the dialog means that as a keyboard user (I rarely use the mouse) I have to tab through the entire page. I understand that the idea is to avoid (as much as possible) a user from doing something they didn't want.

But I won't sacrifice accessibility for it. I like the concept here - setting which button has focus, but still need a solution for null.

Also as an alternative, have you considered changing the labels on the button to be more descriptive? E.g. "Disconnect Account" and "Cancel" instead of a simple "OK", "Cancel" to re-enforce the action they will be taking?