How to secure sensitive operations (cyber security)

Question

I need to perform certain sensitive operations on my computer (access important bank account, sensitive passwords, etc). I currently have 1 mac, and my approach is to not install any closed source software.This approach is very limiting though, as there are many closed-source software that would greatly improve my productivity, and some are straight necessary for some of my business activities.So I am currently considering purchasing another mac and performing only sensitive operations on one (with only open source or highly trusted programs), and other tasks on the other (with a lower level of trust in installed programs).However the downside is that managing two computers probably adds a significant complexity. Is there a better way to achieve this? Thanks!

vmoore · Accepted Answer

> and my approach is to not install any closed source software.
Install Trisquel[0] and only run trusted applications on it. Trisquel ships with /no/ proprietary software and is 'deblobbed' of any closed source software. You even have to buy special 'libre' wifi adapters for it if you want a wireless connection. Vanilla ethernet works well on it though.
[0] https://trisquel.info/

_trampeltier · Answer

The question is always how far you wanna go. I also have a "clean" computer and even there, I have for everything different accounts. On the other side, most people have just an easy life with just one single account.

Hackbraten · Answer

The first thing I&rsquo;d do is to build a threat model.What kind of threats are you trying to protect against?Drive-by exploits in the browser? Spearphishing? Software/hardware supply chain attacks? Those are just general examples.