View Full Version : [all variants] Untraceable net use?

bit mad
January 29th, 2010, 05:21 PM
Suppose you want to wind up a mate, discuss something embarrassing on a forum, whistleblow, or just criticise your usual ISP without any possible comebacks....... :D

IP address trace? Solved by using a public Wifi hotspot (bonus points for walking there in hooded top avoiding CCTV cameras, with mobile phone switched off!)

Browser "fingerprint" techniques? Solved by using a Live CD/USB of a distro you don't normally use - User Agent won't match your usual surfing - browser variables cloaked with NoScript add-on - live boot leaves no trace afterwards.

MAC address? Hotspot access can't be tied to your laptop if you change the network adaptor address?

Is there anything else I've missed? Does that just about cover it? Thanks :)

January 29th, 2010, 06:50 PM
Here's a really radical idea, why not talk to your friend face to face in your, or his home. You always leave a foot print of some sort when you are on the internet.

January 29th, 2010, 07:17 PM
There's plenty of methods for guessing what and where you might be based on a small amount of information being available.

Personally I'm of the mindset that to avoid detection the best approach is not stealth, but deafening loads of false data / noise.

So throw up some flak.

January 29th, 2010, 08:55 PM
Here's another really radical idea, why hide behind the cloak of anonymity? You can stand up an be counted by posting under your own name and this will assure others that you have the courage of your convictions. Far, far better than hiding behind seven proxies...

bit mad
January 30th, 2010, 01:36 AM
I know, I know... :P

But it's a technical question more than anything. I don't need to do anything dodgy online. I'm just interested in the theory & practicalities of how traceable we are, and curious about the hypothetical scenario....

if you really needed to post a forum message somewhere with no potential fallout (because it might cost you your job or whatever) would what I described be enough?

Say you lived in some crummy country under a repressive regime (that somehow allowed wifi hotspots in coffee shops!) and you really wanted to get some information out into the world without disappearing into the saltmines never to be seen again...? :)

January 30th, 2010, 02:01 AM
Check out the experience of Evan Ratcliff:


bit mad
February 1st, 2010, 03:07 PM
There's probably an easier way to get a new random MAC address but I felt the need to write a quick-n-dirty script for the challenge of it.

This seems to do the trick



function random_res(){
for lc in "1" "2" "3" "4" "5" "6" "1" "t" "3" "4" "5" "6" # 12 :)
if [ $lc == "2" ]; then # can't have address with odd second char
res=$res${hex:((RANDOM %8) *2):1} # even digits only
res=$res${hex:(RANDOM %16):1} # I'm Bit Mad
# res(ult) string will 12 random hex nums - now insert some ":"
res=${res:0:2}:${res:2:2}:${res:4:2}:${res:6:2}:${ res:8:2}:${res:10:2}


echo $new_eth0
echo $new_wlan0

sudo ifconfig eth0 down
sudo ifconfig wlan0 down
sudo ifconfig eth0 hw ether $new_eth0
sudo ifconfig wlan0 hw ether $new_wlan0
sudo ifconfig eth0 up
sudo ifconfig wlan0 up


echo Press Enter
read a