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Introduction to How Hackers Work - How Hackers Work. Thanks to the media, the word "hacker" has gotten a bad reputation. The word summons 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. While there's no denying that there are hackers out there with bad intentions, they make up only a small percentage of the hacker community.
But you should protect your computer against the arrival of a Trojan. What hackers do. (certainly not the Web site server) a hacking program can turn up at your machine trying to get in. . About.com will show you resources on how computer security does have. These movies are preposterous and do not depict what hacking truly involves. Hacking 101: How to Break Into Computers About Tech Follow.
The term computer hacker first showed up in the mid- 1. A hacker was a programmer - - someone who hacked out computer code.
Hackers were visionaries who could see new ways to use computers, creating programs that no one else could conceive. They were the pioneers of the computer industry, building everything from small applications to operating systems.
In this sense, people like Bill Gates, Steve Jobs and Steve Wozniak were all hackers - - they saw the potential of what computers could do and created ways to achieve that potential. A unifying trait among these hackers was a strong sense of curiosity, sometimes bordering on obsession.
These hackers prided themselves on not only their ability to create new programs, but also to learn how other programs and systems worked. When a program had a bug - - a section of bad code that prevented the program from working properly - - hackers would often create and distribute small sections of code called patches to fix the problem. Some managed to land a job that leveraged their skills, getting paid for what they'd happily do for free. As computers evolved, computer engineers began to network individual machines together into a system. Soon, the term hacker had a new meaning - - a person using computers to explore a network to which he or she didn't belong. Usually hackers didn't have any malicious intent. They just wanted to know how computer networks worked and saw any barrier between them and that knowledge as a challenge.
ВВВIn fact, that's still the case today. While there are plenty of stories about malicious hackers sabotaging computer systems, infiltrating networks and spreading computer viruses, most hackers are just curious - - they want to know all the intricacies of the computer world. Some use their knowledge to help corporations and governments construct better security measures. Others might use their skills for more unethical endeavors.
In this article, we'll explore common techniques hackers use to infiltrate systems. We'll examine hacker culture and the various kinds of hackers as well as learn about famous hackers, some of whom have run afoul of the law. In the next section, we'll look at hackers' tricks of the trade.
Hacking a Computer - How Zombie Computers Work. ВCrackers transform computers into zombies by using small. В programs that exploit weaknesses in a computer's operating system(OS). You might think that these crackers are cutting- edge Internet criminal masterminds, but in truth, many have little to no programming experience or knowledge. Sometimes people call these crackers "script kiddies" because they are young and show no proficiency in writing script or code.) Investigators who monitor botnets say that the programs these crackers use are primitive and poorly programmed.
Despite the ham- handed approach, these programs do what the crackers intended them to do - - convert computers into zombies. In order to infect a computer, the cracker must first get the installation program to the victim. Crackers can do this through e- mail, peer- to- peer networks or even on a regular Web site.
Most of the time, crackers disguise the malicious program with a name and file extension so that the victim thinks he's getting something entirely different. As users become savvier about Internet attacks, crackers find new ways to deliver their programs. Have you ever seen a pop- up ad that included a "No Thanks" button? Hopefully you didn't click on it - - those buttons are often just decoys. Instead of dismissing the annoying pop- up ad, they activate a download of malicious software. Once the victim receives the program, he has to activate it.
In most cases, the user thinks the program is something else. It might appear to be a picture file, an MPEG or some other recognizable file format. When the user chooses to run the program, nothing seems to happen. For some people, this raises alarm bells and they immediately follow up with a flurry of virus and spyware scanner activity.
Unfortunately, some users simply think they received a bad file and leave it at that. Meanwhile, the activated program attaches itself to an element of the user's operating system so that every time the user turns on his computer, the program becomes active. Crackers don't always use the same segment of an operating system's initializing sequence, which makes detection tricky for the average user.
The program either contains specific instructions to carry out a task at a particular time, or it allows the cracker to directly control the user's Internet activity. Many of these programs work over an Internet Relay Chat(IRC), and in fact there are botnet communities on IRC networks where fellow crackers can help one another out - - or attempt to steal another cracker's botnet. Once a user's computer is compromised, the cracker pretty much has free reign to do whatever he likes. Most crackers try to stay below the radar of users' awareness.
If a cracker alerts a user to his presence, the cracker risks losing a bot. For some crackers, this isn't much of a problem since some networks number in the hundreds of thousands of zombies.
In the next section, we'll look at the relationship between zombie computers and spam.