attack by traffic analysis

Hi,

Congraturations on the new WG! I am very much interested in location-based
services in general and privacy in particular. I think the anonymous use of
the location information is also very relevant and important topic.

Since there is no post at all on this list, I am going to try with this
message.

I wonder how this working group sees the issues about the "traffic analysis"
attack. In all IP(v6) mobile terminal world, everyone may have a cell phone
with a global IP address. And suppose that John is acessing to the Internet
at a hot spot (e.g. a Starbucks cafe in Shinjuku). If a bad guy can
"traceroute" her/his session and knows the IP address of the cafe and its
location, the guy can know that John is now in the cafe in Shinjuku). I
think this problem is very general but becomes serious in mobile use.

Best regards,

Kenji Takahashi
NTT Labs
Toyo, Japan.
Received on Mon Jun 25 05:29:47 2001