What are the functions of white hat hacker?

Answer 1

"White hat describes a hacker who identifies a security weakness in a computer system or network but, instead of taking malicious advantage of it, exposes the weakness in a way that will allow the system's owners to fix the breach before it is can be taken advantage by others (such as black hat hackers.) Methods of telling the owners about it range from a simple phone call through sending an e-mail note to a Webmaster or administrator all the way to leaving an electronic "calling card" in the system that makes it obvious that security has been breached. While white hat hacking is a hobby for some, others provide their services for a fee. Thus, a white hat hacker may work as a consultant or be a permanent employee on a company's payroll. A good many white hat hackers are former black hat hackers. The term comes from old Western movies, where hero's often wore white hats and the "bad guys" wore black hats." Answer from SearchSecurity.com

Answer 2

A white hat hacker is someone who, although they still use most of the hacking resources, hack not to be malicious, but to help the person (or company) that they have hacked improve the security of their system so that the chances of a black hat hacker (super-malicious) penetrating the system are reduced.

Answer 3

Answer: White hat hackers, also known as "ethical hackers," are computer security experts, who specialize in penetration testing, and other testing methodologies, to ensure that a company's information systems are secure. As a side note, a computer cracker is a person who breaks into a computer system without authorization. Hence, the bad guys should be called computer crackers and not hackers.

Answer 4

A white-hat hacker is a person who is considered an "ethical hacker" and is eligible to hack into computers with the consent of the client. Technically, this is legal hacking.