It does not mean that.
It means some lawyer is concerned that Mozilla is in possession of some kind of data that is subject to other regulatory claims in some country.
This could easily be trivial, benign, or wrong.
I'll be shocked if a clarification/correction is not issued within 24 hours.
And I'll be shocked if some portion of HN doesn't argue that the clarification is a coverup and now that we've seen the real Mozilla we can never trust them again and we should all use Chrome because if we're going to get eaten we should all be eaten by the same monster.