vb.net barcode scanner webcam Doing It Wrong: The Break-Ins in Software

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Doing It Wrong: The Break-Ins
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Most corporations want to believe that their employees are the cream of the crop and would never violate corporate security. In reality, however, some employees are not what they seem. People who commit security crimes against their employers are motivated by a number of reasons; the disgruntled insider (a current or former employee) is a principal source of computer crimes for many companies. Insiders knowledge of the target company s network often allows them to gain unrestricted access and damage the system or steal proprietary data. The 2000 survey by the Computer Security Institute and FBI reports that 71 percent of respondents detected unauthorized access to systems by insiders.
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Virtually every day we see news reports about recreational hackers, or crackers, who crack into networks for the thrill of the challenge or to gain bragging rights in the hacker community. Remote cracking once required a fair amount of skill and computer knowledge, but recreational hackers can now download attack scripts and protocols from the World Wide Web and launch them against victim sites. Thus, even though attack tools have become more sophisticated, they have also become easier to use.
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Increasingly, terrorist groups are using new information technology and the Internet to formulate plans, raise funds, spread propaganda, and communicate securely. Moreover, some terrorist groups, such as the Internet Black Tigers (who reportedly are affiliated with the Tamil Tigers), have been known to engage in attacks on foreign government Web sites and e-mail servers. Cyber terrorism by which we mean the use of cyber tools to shut down critical national infrastructures (such as energy, transportation, or government operations) for the purpose of coercing or intimidating a government or civilian population is thus a very real, although still largely potential, threat.
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Not surprisingly, foreign intelligence services have adapted to using cyber tools as part of their espionage tradecraft. As far back as 1986, before the worldwide surge in Internet use, the KGB employed West German hackers to access U.S. Department of Defense systems in the well-known Cuckoo s Egg case. Foreign intelligence services increasingly view computer intrusions as a useful tool for acquiring sensitive U.S. government and private sector information.
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Hactivists
Recently there has been a rise in what has been dubbed hactivism politically motivated attacks on publicly accessible Web pages or e-mail servers. These groups and individuals overload e-mail servers and hack into Web sites to send a political message. Although these attacks generally have not altered operating systems or networks, they damage services and deny the public access to Web sites containing valuable information; and they infringe on others right to communicate. One such group, the Electronic Disturbance Theater, promotes civil disobedience online in support of its political agenda regarding the Zapatista movement in Mexico and other issues. In the spring of 2000, the group called for worldwide electronic civil disobedience, and it has taken what it terms protest actions against White House and Department of Defense servers. Supporters of Kevin Mitnick, recently convicted of numerous computer security offenses, hacked into the Senate Web page and defaced it in May and June 2000. The Internet has enabled new forms of political gathering and information sharing for those who want to advance social causes; that is good for the promotion of democracy worldwide. But illegal activities that disrupt e-mail servers, deface Web sites, and prevent the public from accessing information on U.S. government and private sector Web sites should be regarded as criminal acts that deny others their human rights to communicate rather than as an acceptable form of protest.
Doing It Wrong: The Break-Ins
Intruder Knowledge
How have intruders gained the knowledge that allows them to commit such serious break-ins For the most part, few of the intruder types we ve discussed have extensive knowledge of the inner workings of today s computer systems. Many of these intruders do nothing more than use the information and tools built by other intruders in the past. Many Web sites provide them with all the information and tools needed to break in or damage computer systems and networks. This doesn t mean that the information and tools downloaded by intruders were created for the purpose of aiding such attacks. On the contrary, much of this knowledge is designed to help administrators and security officers recognize potential security holes within their systems and networks such was the case with Sun Microsystems snoop utility, described earlier in this chapter. It s through the use of these tools, however, that intruders are able to exploit the weaknesses inherent in many systems.
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