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Implementing Virus Scanning In Computer Networks, Umakant Mishra
Implementing Virus Scanning In Computer Networks, Umakant Mishra
Umakant Mishra
Some viruses exploit the features and capabilities of computer networks to spread, operate and damage network environments. For example, the virus may copy itself to other computers in the network or may increase network activities congesting the network traffic. The conventional anti-viruses are not efficient enough to detect and control viruses in a network environment. As they are file based they cannot scan the data while being downloaded from the server.
Most of the drawbacks of conventional scanning are taken care by a firewall-based virus scanning. But this method requires high-end machines to withstand the load of centralized scanning. There …
Improving Speed Of Virus Scanning- Applying Triz To Improve Anti-Virus Programs, Umakant Mishra
Improving Speed Of Virus Scanning- Applying Triz To Improve Anti-Virus Programs, Umakant Mishra
Umakant Mishra
As the number of viruses increases the amount of time to scan for those viruses also increase. This situation is worsened because of the increasing number of files typically stored in a computer system. Besides more complex tests are required to detect the modern day’s intelligent viruses. Thus a combination of all these factors makes a full virus scan very lingering and resource consuming. With thousands of types of viruses and gigabytes of storages, a typical virus scanning may take several hours. Because of this reason many users don’t like to virus scan their computers unless so required.
This article …
Detecting Boot Sector Viruses- Applying Triz To Improve Anti-Virus Programs, Umakant Mishra
Detecting Boot Sector Viruses- Applying Triz To Improve Anti-Virus Programs, Umakant Mishra
Umakant Mishra
The boot sector virus infects the boot record of the hard disk or floppy disks. It gets loaded onto the memory every time the computer is booted and remains resident in the memory till the computer is shut down. Once entered it alters the boot sector of the hard disk and remains in the hard disk permanently until the system is totally damaged and fails to boot.
While analyzing the problem from TRIZ prospective we try different possibilities to avoid boot sector viruses, such as, Can we do away with boot record? Can we avoid booting from floppies? Can we …
Solving Virus Problems By System Administrators- A Triz Perspective, Umakant Mishra
Solving Virus Problems By System Administrators- A Triz Perspective, Umakant Mishra
Umakant Mishra
The computer virus is not only a problem to the end user but also a problem to everybody whoever is associated with computers, including systems administrators, corporate managers and even anti-virus manufacturers. In the previous article we discussed on how to use TRIZ for analyzing and solving virus problems of an end user. In this article we will focus on the problems faced by the systems administrators.
An analysis of virus scenario finds that the same situation of virus infection creates different problems to people at different levels, such as, a computer user, a system administrator, a corporate manager and …
Methods Of Virus Detection And Their Limitations, Umakant Mishra
Methods Of Virus Detection And Their Limitations, Umakant Mishra
Umakant Mishra
An anti-virus program typically employs various strategies to detect and remove viruses. The popular methods of detecting virus are signature scanning, heuristic scanning and integrity checking. However each of these methods has its own strengths and weaknesses.
Signature scanning (or searching of known virus patterns) is the most common method of virus detection. But it cannot detect viruses whose signatures are not available in the virus database. The other popular method is to use a heuristic algorithm to find viruses based on common behaviors. This method can be complex, but it has the ability to detect unknown or new viruses. …