Short answer: Yes. Using Hamachi, you're letting those users behind your firewall.
Instead, use your router's port forwarding feature for this.
Of course it's not hacked, if you buy it, but there are mods available. Check out the Minecraft Forums for more info.
No. minecraft is never free unless hacked
Nobody makes their Minecraft password publicly available or they would get hacked.
No there is no cheat for it, But there is private servers (hacked cabal servers) You can search Cabal private server on google and you can play hacked
Well, I'm afraid to say this but, yes.
No, you misunderstood, minecraft is an affiliate with them. They aren't actually cursed or hacked in any way.
Yes, it is. Although it requires your Minecraft account name and password, your account will not be stolen or hacked.
Mineraft Sp is a hacked version of Minecraft so it's offline. I suggest you buy Minecraft if you want MultiPlayer.
What the heck are you talking about? You don't need a password for Minecraft 1.8 but you do need an account unless you hacked it.
A system can be hacked by programs running in either the foreground or the background; it all depends on their stability and security preparedness.
Nope, just means your ports for minecraft are open, and someone has your ip.
Depends on what you mean by "hacked." There are some servers that don't have good protection from hacks, and so hackers useing cheats come on. If you mean hacked as in to compromise the server itself, then that depends as well. The more the population of miencraft rises, the more servers will be hacked. Minecraft servers are hacked just as often as any other PC game with dedicated servers, such as Team-Fortress 2 and Counter-Strike: Source. It's just something that comes with the people. The more people that play minecraft, the more server there will be, and the more hackers there will be.