[Cryptography] A possibility of good anonymous communications?

[Yui Hirasawa]

> couldn't the fact that one utilizes the service of the remailer network
> be easily determined by the agency from one's own IP address?

I don't know about remailing services but at least for anonymity
networks like Tor the idea is that in the future everyone would be using
them. If everyone used Tor it wouldn't do any good knowing that your
target uses it.