There's a saying that nothing on the Internet is safe, thus has been one of my philosophy and will always reminds myself to be more careful while surfing the Internet of a thing. So, saving anything online looks dangerous and shouldn't be use by cryptocurrency holders because of hacks. Personally, am not using a hardware wallet but have a cold storage for my stash and have been safe on the Internet. Don't click everything you sew as a link sent to you or come across.
That statement you have said about the internet is true, there is really nothing safe with the internet because you are browsing into a public and wide area network. The only thing that is not public is your important information but it is already stored in a particular database wherein it is encrypted so they cannot use your account. I highly recommend to everyone for you to secure your funds is that you should store your important information on your local devices and do not use some storage online. You should have to store it on your pc or mobile phone.
One way of protecting my bitcoin is accessing trusted websites only. Another is by using hardware wallet or offline mode. In that case, it is far away from the internet. Hackers always finds a way to get your precious coins so it is better to get away your coins away from the internet. We must think what will they do so that we can prevent them and secure everything we worked for.
Indeed, do not get easily hooked by the ads also. Do not click any links that are suspicious because that might be malicious software that can steal your important information. I can say that you must be informed when you are making steps online because one single mistake can lead to a bad situation, which is losing your money,