Honestly, this topic has been discussed to death. Do a forum search for words like: VPN, bridge, proxy, encrypt, PGP, GPG, Linux, Tails, Liberte, secure, erase/erasure/wipe, hard drive, thumb drive, "best security", "most secure", etc. Start by limiting the search to topic subjects and sort by largest topic. Look for comments by me, kmfkewm, SelfSovereignty, pine, LouisCyphre and NightCrawler. There's been a lot of debate about the best security setups, and volumes have been written about it.