Hackers they have their strategy to hack. So if you are a hacker and did you hack some system? How did you hack?

Ok, this is my example answer of this question.

1. Hack a user with windows system with a trojan horse, infecting their pc, sending them a picture or a program etc... (I used this to my friends:D)
2. Using some bug to get into their pc (Vulna.) This is so difficult to do. Right? I didnt yet. Bcoz its necesary to program any exploits.Right?
3. Cracking...Right?
4. Sniffing...Right?
5. ....Do you know the most important to get in? Well, sincerely I dont know. :)

So if you have other strategy or you want to correct my answer. Post it now.

Born Peace - War die