Hacking, that has been part of computing for over 50 years, is really a very broad discipline, which covers a wide range of topics. The very first reported hacking was in 1960 at MIT and the word 'Hacker' was used.

For non-geeks, here is a short introduction. Computer software includes computer programs, which give instructions how the hardware should perform certain tasks. These softwares are often prepared by programmers Hire a Hacker , who have full use of the whole programs. The programs are then sold to users with strict rules or protocols where they're accessible only to certain authorized persons (usually with passwords) for reasons of security. Theoretically, nobody except these authorized persons have access to use these.

How do others obtain unauthorized access?

1. The initial programmers, who have prepared the origin code, and have invariably provided their own entry points trap-doors and passwords.

2. Earlier users who're no longer authorized users, but whose passwords haven't been deleted.

3. Other unscrupulous persons who wish to access the machine for ulterior motives.

4. Since there is so much activity and business run by computers, and most computers are connected by the Internet, they're open to be accessed by various persons via the internet.

5. Computers are also vulnerable to attack by malicious software (mal-ware) and virus attacks, which leaves them open to attack by hackers and mal-ware. These 'virus infections' and 'worms' are introduced by persons who desire to hack into the machine and steal information or make entire systems crash or destroy the whole data stored.
Just like virus attacks in computers are prevented by anti-virus software like MacAfee, etc. companies protect themselves from hacking by employing ethical hackers. EC Council defines an ethical hacker as 'a person who's usually employed having an organization and who is able to be trusted to undertake an effort to penetrate networks and/or computer systems utilizing the same methods and techniques as a malicious hacker.'

It identifies the act of locating weaknesses and vulnerabilities of computer and information systems by duplicating the intent and actions of malicious users.
It can be known as penetration testing, intrusion testing, or red teaming. It requires them look at client network as potential malicious attackers, then devise the best safeguards to safeguard clients from attacks. |

So just why are ethical hackers needed?

1. They're needed to spot and seal all possible points of access by hackers, which may be individuals or sophisticated software, including 'worms' ;.

2. In simple language, an ethical hacker thinks and works like an unethical hacker to find and exploit vulnerabilities and weaknesses in a variety of systems, and how they may be breached.

3. Then he devises methods to safeguard the vulnerable points by erecting firewalls, stronger passwords, frequently changing passwords, using iris scans or fingerprints as well as passwords, encryption, and so on.

4 In addition they need to avoid ingress (entry) by the first programmers who created the program and by persons who're no longer authorized to log in to the system.

5. They could also suggest VPN (Virtual Private Network), a safe tunnel between a computer and destinations visited on the internet. It uses a VPN server, which can be located anywhere on the planet, and provides privacy. VPN will do the work to avoid someone snooping your browsing history, or spying on you. VPN could make you browsing from the server geo-location not your computer's location so we will remain anonymous.

With most private data being available today over the Internet for a price, Data Privacy is really a serious concern; hackers can quickly buy your personal data and steal important computer data using your passwords for other sites (since most folks have exactly the same weak passwords for different applications and rarely change passwords). They will educate users on the best way to choose difficult passwords, where you should record or not record the passwords, and how frequently you'll need to change passwords.