Snails are so cool! I’ve been using snail cream to fix a skin issue on my face with great success. There is nothing like it that I have tried. A little goes a long way.
even chrome browser plugins have security issues similar to this case. there are billions of dollars and many smart developers working on it. It's similar to building an app store inside your app. For the Apple app store, they reduce malicious apps by being very strict who/what people can publish and it's behind a paywall.
You are safe. The way this hack works is that someone online would contact you, share a obsidian valut with you, you open the vault, you download & install a plugin the hacker tells you to install to open the vault.
It's all described in the article if you would like to read it.
Once you have some cryptocurrency in your wallet, you don't go to the exchanges to do transactions. All transactions on the blockchain are done in a decentralised way without a 3rd party.