The Norman Book on computer viruses covers all aspects of modern computer viruses, from what types of viruses exist, to how they are created and distributed, with a final chapter on how to protect your systems against viruses.
This paper studies a number of anti-virus engine tests which reveal that each virus scanner presents its own strengths and weaknesses. As no single anti-virus engine can fully protect against all possible threats, this paper examines how simultaneous use of more than one virus engine can achieve greater security than is technically possible when relying on one anti-virus engine alone.
Although you’ve gathered a considerable amount of data to this point, you will need to analyze this information to determine the probability of a risk occurring, what is affected, and the costs involved with each risk. Once you’ve identified the risks that can pose a probable threat to your company, and determined how much loss can be expected from an incident, you are then prepared to make decisions on how to protect your company.
Firewalls and other simple boundary devices lack some degree of intelligence when it comes to observing, recognizing, and identifying attack signatures that may be present in the traffic they monitor and the log files they collect. Without sounding critical of such other systems’ capabilities, this deficiency explains why intrusion detection systems are becoming increasingly important in helping to maintain proper network security.
This text file is for a server administrator to be able to determain whether or not there is an attempted break-in or intruder, and what the approproate steps are.
What causes the buffer overflow condition? Broadly speaking, buffer overflow occurs anytime the program writes more information into the buffer than the space it has allocated in the memory. This allows an attacker to overwrite data that controls the program execution path and hijack the control of the program to execute the attacker’s code instead the process code. For those who are curious to see how this works, we will now attempt to examine in more detail the mechanism of this attack and also to outline certain preventive measures.
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