[itronitron]

>> My first thought would be that my computer had been somehow compromised.

... your computer was compromised.

I think we should all expect a full accounting from Mozilla on their actions and what data and information was acquired by them or a 3rd party as a result of the 'study' as well as what steps they will take to prevent this from happening again (now that they have a proof of concept (MVP?) surely another 3rd party can plant their own easter eggs in the future.