Trezor (and some other hardware wallets) has open source software, which means anyone can check exactly what it is doing inside.
Oh ok, i understand now, and i didn't know that before to buy it ...
But with the Hardware schematics and the open source firmware it's more easy for an hacker to find a breach, no?
I would say no. The open source concept has been around for decades, and it has proven to be a good solution. Since anyone can examine the code, it's easier to identify and fix bugs or security vulnerabilities. For example, the Linux operating system has become increasingly popular. Would you say that it is more or less secure than proprietary and closed-source software like Windows?
i heard that a lot of people have a Ledger Hardware Wallet ...
Yes, they do. Ledger has been one of the most popular hardware wallet choices for years. Things change… I have heard that many people today are opting for alternative solutions.
So now does my cryptos are more secure on the Ledger or on an Exchange?
It is kinda like trying to decide if you should keep your money in a safe that someone else might have access to, or give it to a stranger to hold onto. A tough choice.