Now-a-days security is one of the major issues of information systems.
The growing use of computers and internet, also increases the security problem. The increasing extensibility of systems, and need in organizations have made software security a bigger problem.
Wireless networks such as Bluetooth and Wi-Fi – and the growth of “smart” devices, including smartphones, televisions and tiny devices as part of the Internet of Things.
The word bids up thoughts of malicious computer users finding new ways to harass people, defraud corporations, steal information and maybe even destroy the economy or start a war by infiltrating military computer systems.
Computer hacking is the practice of modifying computer hardware and software to accomplish a goal outside of the creator’s original purpose.People who engage in computer hacking activities are often called hackers.
Computer hackers typically have expert-level knowledge in the area of computer technology, which gives them very deep insight into how computers work and the skills necessary to manipulate them in a variety of ways.
Computer hackers know how to gain unauthorized access to individual computer systems and shared computer networks.
How Hacking Happens?
Not like that Computer hackers primarily attack only large companies, but the truth is that they can also target your computer just as easily. Of course, they can’t do anything until they get “inside” your computer, but there are plenty of ways they can make that happen.
In the past hackers have used a program “Sub7” to attack the computer. But for that to happen, Sub7 needs to get into your computer…and unfortunately, there are a few ways that can happen to you: Sub7 can work its way into your computer through an email, or the program can be “delivered” to you if you use the Internet Relay Chat (IRC) protocol.
One of the tools a hacker uses sends out packets of data to probe computers and find out if there are any vulnerable ports available that are ripe for exploitation. All computers have ports that are open when they’re on the Internet. The ports accept different types of data from different sources—think of them as different doors in a house, or boating docks in a busy seaside port
The hacker could be anywhere in the same place, same city or same country. It doesn’t matter where they are, they can copy photos from your computer onto theirs, or delete your tax records. They can steal your personal data or delete the programs you have on your computer
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