What is Hacking?

What is hacking ?

Unauthorized intrusion into a computer or a network is called hacking. A hacker is a person who engages in these activities. This hacker usually changes systems or security features to perform a task that differs from the original intent of the system

 

Non-malicious activities, usually involving improvised changes to process, are also categorized are used for hacking, including:

• Vulnerability scanner: checks for vulnerabilities on computers or networks
• Password cracking: as the name suggests, the process of hacking passwords from computer or networks
• Packet sniffer: captures data packets to look for passwords and other data being transmitted
• Spoofing attack: mimicking websites to obtain data from users programs which trust it as a legitimate site 
• Trojan horse: mimics the famous ancient strategy of the Trojan horse to create backdoor access to the computer  
• Viruses: self-replicating programs that spread by inserting copies of themselves into executable code or the network
• Key loggers: recording user keystrokes and retrieving them later to gain access to passwords, data and other personal information 
  

                                                            Image credit - naturaltherapypages

Hackers are an important part of many corporations.These hackers use their skills to find flaws in the company security system, thus preventing computer-related crimes