Tails is a Debian based live operating system which can be booted from USB, CD/DVD or SD card and lets you browse internet anonymously. It uses many cryptographic tools to protect your privacy while you continue to explore the internt. The very first version of this operating system was released in 2009 and it has been under news and constant development till date. Right now developers are getting ready to make Tails 1.5 available for download. In the effort to make this new release a stable operating system, they have announced availability of Release Candidate 1 (RC 1) for Tails 1.5 so that users may test and report any buys in the operating system.