Tor protects your privacy on the internet by hiding the connection between your Internet address and the services you use. We believe Tor is reasonably secure, but please ensure you read the instructions and configure it properly.
./configure && make && make install
sh autogen.sh && ./configure && make && make install
https://www.torproject.org/
https://www.torproject.org/download/download.html
https://www.torproject.org/docs/documentation.html
https://wiki.torproject.org/projects/tor/wiki/doc/TorifyHOWTO
https://www.torproject.org/docs/faq.html
See the doc/HACKING directory.
https://trac.torproject.org/projects/tor/wiki/org/teams/NetworkTeam/CoreTorReleases