Any service that offers web server access, is automatically less secure than my private firewalled computer. (assuming I don't install trojan/viruses myself).
This proves you don't understand network security.
Reality:
When comparing your computer connected to the WAN to a server connected to the WAN they are both as secure as they are designed to be. "automatically" doesn't even enter into the discussion.
Most servers are locked down far more than either OSX or Windows OS's even with firewalls. They have to be as they are more valuable targets.
Most Bitcoin hot wallet "hacker attacks" are likely inside jobs where outside hackers are blamed for internal theft.
lol, let's compare again:
Web server:
1. IP address automatically revealed to the world
2. actively offers web access to the world, which is the route of entry for majority of internet based hack attacks.
Private PC:
1. IP address can not be easily obtained
2. firewalled, no port will offer access from the outside
See the difference now? you can't even obtain my private PC's IP address, without some serious big effort, probably NSA level surveillance is needed. Sure my computer is connected to the WAN, but how do you know this computer is mine? there's billions of devices connected to the WAN. Even if you somehow got my IP address, then you need to somehow attack my firewalled PC that does not offer any service to the outside, which is actually not as easy as you think, it's probably nearly impossible to do so.
On the other hand, a web server actively broadcasts its IP address, and also actively offers a route of entry into the server by port 80, and possibly FTP too. Therefore, it's automatically less secure than my private PC, got it now?