For the security-minded, SSL/TLS can be easily added to your Redis server (http://bencane.com/2014/02/18/sending-redis-traffic-through-...) and Redis Cloud offers SSL plans as well. Furthermore, Redsmin has SSL support and SSL-enabled clients for Python, Ruby, Java & PHP are also out there (we helped with that, so I can recommend them fully) - http://redislabs.com/blog/secure-redis-ssl-added-to-redsmin-...