Tails is one of the most secure, possibly THE most secure, operating system available for PC computers today. The Tails Operating System is even recommended by Edward Snowden. Now Tails is capable of booting on systems where UEFI Secure Boot is enabled.
Launched in 2009, the Tails OS is meant to be launched from DVDs or USB thumb drives, operates solely in a computer’s RAM, runs all network traffic through the Tor network, and does not leave artifacts on the hard drive unless specifically configured to do so.
I have used Tails quite a bit. I find it to be a bit awkward to use simply because it has so many security features that require attention to use properly. However, I consider that to be both an advantage and a disadvantage. If you have need for online security, having many security features is a good thing!
If you need to hide your online use from credit card thieves, identity thieves, business competitors, your government’s spies, other governments’ spies, or from your ex-spouse’s attorney, you need Tails.
You can read more about the latest enhancements to Tails in an article by Catalin Cimpanu in the ZDNet web site at: https://www.zdnet.com/article/tails-the-security-focused-os-adds-support-for-secure-boot/