Tails

Question raised in https://lists.autistici.org/message/20200103.094500.22ffbd74.en.html

Answered in https://lists.autistici.org/message/20200228.074212.684e7e99.en.html

First, most, if not all, exploited applications have access to
locale configuration.

Wrt. network fingerprinting:

• We have to assume that some applications may expose the system’s
  locale configuration as part of their network activity.

• For Tor Browser and Thunderbird, our configuration tries to avoid
  this (best effort) but it’s impossible to prove we did not
  miss anything.

Wrt. local storage:

• If an adversary can read the content of the persistent storage, I’m
  pretty sure that the locale configuration can be easily inferred
  from that.

• If/once we allow persisting the locale in cleartext on the system
  partition, this information will be available to an adversary
  who seizes the Tails device.