C'est ce que cherche à savoir Panopticlick, une initiative de l'Electronic Frontier Foundation.

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Visiblement, je suis unique. On peut donc me repérer de n'importe où, même si je passe par Tor. La liste des plugins et le nom des polices installées sur le système (ainsi que leur ordre) semblent être des facteurs importants. Mozilla semble avoir pris conscience de ce problème et tente de réduire cette empreinte, de même que l'extension Torbutton pour Firefox.

Mais il semble qu'il reste encore beaucoup de travail avant de pouvoir espérer un relatif anonymat sur le web.

Using CPAN in Ubuntu Lucid Lynx (10.04), the command line history was broken and the up/down keys only triggered escape codes such as ^[[A. Additionally, the following error messages showed up on CPAN startup (only one of them at a time):

Terminal does not support GetHistory
Terminal does not support AddHistory

Term::ReadLine was correctly installed, but when I tried to install Bundle::CPAN, I got failed tests for Term::ReadLine::Perl. So I did:

look Term::ReadLine::Perl

to inspect the build folder, tried the test which actually seems to work. Installing the module from the shell with:

make install

was sucessful, and after restarting CPAN I had my terminal working properly. Anyway, it seems Term::ReadLine still isn't functionning perfectly:

perl -MTerm::ReadLine::Perl
Can't locate object method "Features" via package "Term::ReadLine::Stub" at /opt/perl-5.12.1/lib/site_perl/5.12.1/Term/ReadLine/Perl.pm line 101.
Compilation failed in require.
BEGIN failed--compilation aborted.