VPS companies give you a windows with mt5 preinstalled (and tell you to not use internet outside of mt5 sometimes).
You think they safe for example metaquotes vps?
This depends on the end user.
Will they check the logs and connections?
And running processes ?
You only want to hear what you want to hear.
Yes the internet is safe.
Now go trade.
How do you check the connections? You mean something like wireshark?
That can be many, many things.
From simple who and last commands to in depth network statistics.
Look at it from the other way, Expect them.
You can also invite them, Honeypot style.
It all depends on how far you want to push it to be SURE in stead of just a feeling, that nothing suspicious is going on.
Will keep it at the wireshark level at least for a while then. A great trading VPS (and their security team) will also be in the mix.