Remote access
"Someone tries our VNC password every few minutes."
The problem: the remote-control port had to stay reachable, and bots from around the world kept guessing the password - day and night, from new addresses.
What Coinetic did: it reads every failed VNC login and bans the address at the first wrong password. The ban list shows how often each one comes back: the most stubborn came back more than 700 times.