After discussing with Seif, I realized that there's a major issue that
seems to be unspoken. Zeitgeist is meant to be cross-platform "myware"
program - it helps you to use your computer.
There's a problem with the implementation though - some platforms are
not really privacy protecting or user friendly by default; they may not
all offer disk encryption or real data protection of any kind. So in
effect, when Zeitgeist is running, you have no idea if you're safe in
certain threat models. This is the flip-side to any myware program: when
the data collected falls into the wrong hands, Zeitgeist becomes spyware
that is harmful to the user. If Zeitgeist doesn't encrypt the database
by default, the answer to "am I secure if my device is lost?" is at
best, a maybe and by default, a no.
You received this bug notification because you are a member of Zeitgeist
Framework Team, which is subscribed to Zeitgeist Framework.
Encryption of database
Status in Zeitgeist Framework:
I think that Zeitgeist should encrypt databases in
~/.local/share/zeitgeist/* for anti-forensics reasons.
While someone may happen to use an encrypted disk, Zeitgeist may serve
as the ultimate accidental spyware to an unsuspecting user. One
possible mitigation is to randomly generate a reasonable key, tie it
into the login keychain and then use that key with something like
http://sqlcipher.net/ rather than straight sqlite.
In theory, a user will never know that this encryption/decryption is
happening - no underlying assumptions about the disk need to be made
to maintain any security guarantees. This should prevent anyone from
learning the contents of the database without also learning the login
password. Modern Ubuntu machines disallow non-root ptracing (
and if the gnome keyring is locked, an attacker would have a much
harder time grabbing meaningful Zeitgeist data without interacting
with the user or bruteforcing the login keychain.
Mailing list: https://launchpad.net/~zeitgeist
Post to : firstname.lastname@example.org
Unsubscribe : https://launchpad.net/~zeitgeist
More help : https://help.launchpad.net/ListHelp