class abc

{

public static void main(String[] args){

System.out.println("nihaoma ");

}

}

Being a hacker requires knowledge of programming, network and operating systems, and there are different levels

< p>The most important thing in learning programming is to have programming ideas (if you can learn it, it is recommended to learn assembly, and you must know at least one or two of c, c++, java, etc.) You need to practice more; you can learn Cisco in terms of network; the system has Unix, linux, aix, etc. all have corresponding certifications;

Once you have solved these three aspects, you can do network security