As long as I'm online, I'm sure any well-informed techie could, at any point, show me how my computer usage is insecure. At some point, I must stop securing stu

As long as I'm online, I'm sure any well-informed techie could, at any point, show me how my computer usage is insecure. At some point, I must stop securing stuff and start working. I'm just a regular user running Debian with firewall enabled on a desktop machine. That's enough for me. I won't use the internet via email like Richard Stallman.