OPSEC For Ubuntu 17.04

[mortal25]

If you are looking for OPSEC, don't use Ubuntu. Use the Debian based Whonix.
This is the best way:
VPN > WHONIX VM > TOR > PROXY
VPN: Your ISP won't see you are using TOR, you will never become suspicious
Whonix Workstation: The VM helps you to isolate your work in a safe environment. the Whonix is focused on privacy and anonimity
TOR: You can connect to the TOR network thru the Whonix Gateway, this way you will be safe by the Onion router
Proxy: The websites you visit won't see you are using tor, so you won't be suspicious for them. For example Google won't show catcha all the time.
The Proxy can be avoided.
If you prefer Windows: try the FFOX VM. Connect with the Whonix Gateway.
It can be useful also for fingerprint spoofing, but nowadays their service is not running 100%