The last time you installed a large software, let us say a photo program, you just executed one command, for instance INSTALL or SETUP. After that the installation program took control, creating and deleting files. A few minutes later you have a lot of new code and data installed.
You had really no idea of what you had received. Hopefully all you received was good and may be it was. But think for a minute of all the millions of byte that were transferred and all the modifications that were made to the existing files. And all this was going on without your consent or knowledge.
A malicious code can do anything other program can. It can write a message on the computer screen, erase a stored file or stop a running program. Malicious codes can do different things every time. They can also do nothing most of the time and then suddenly act in a very dramatic way.
What is a malicious code? How is it possible that it can take control of a system? How can you recognize a malicious code? Is it possible to stop it? Let me try to give you some answers.
A malicious code is an undesired effect in a program or in a part of a program, caused by an agent intent on damage. A virus is a program that can pass on a malicious code to other good programs by modifying them. A virus “infects” a program by attaching itself to the program. Then the virus destroys the other program or it exists with it. Also the good program can be modified. It then acts like a virus and starts to infect other programs. A transient virus acts when the attached program runs and terminates when the attached program stops. A resident virus locates itself in the memory of the computer and can remain active even if the attached program stops.
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\\ tags: logic bomb, malicious code, Security, trojan horse
As more and more people are becoming comfortable using their computers at school, home or in the office it’s only a matter of time before they encounter a computer virus. Here are our top 10 steps to protect you from computer viruses.
Use a high quality anti-virus program. There are many different anti-virus computers programs on the market some of them are better than others. Look to reputable computer magazines or websites for ratings to help you find the one that matches your needs.
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\\ tags: Computer Virus, Security, Virus
You can lock your computer using your USB Stick. If someone tries to start your computer without your USB stick, it will display boot errors.
Understanding what you are going to do
* When windows boots it checks for the primary boot device in bios which is by default is your hard drive.
* Then it looks for a system file called as Boot.ini which tells windows where to start booting from. Without this file windows will throw you an error ” Invalid Boot.ini ” or “Windows could not start “
Before begin, you playing with the BIOS and boot files of your computer may result in you not being able to boot into your Windows partition; so continue at your own risk! Things you need: A 64MB or larger sized USB Stick, Windows Recovery Disk (just in case).
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\\ tags: Flash Drive, Security, Tips and Tricks, USB
Your CDs, DVDs, and other formats of optical media have become very important part of the highly flourishing modern digital entertainment industry. You can find the role of CDs & DVDs in every arena of the digital entertainment industry including music, movies, games, television, internet, etc. Though new formats of optical discs, such as BDs (Blu Ray Discs) and HD (High-Definition) DVDs have come up recently, CDs & DVDs are still the more popular and common formats.
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\\ tags: CD Replication, computer, Tips and Tricks
Whether you’re just starting your Information Technology career, or wanting to get further ahead in your current IT career, you have probably thought about earning one of the many popular computer certifications such as the Cisco Certified Network Associate (CCNA) certification, or the MCSE (Microsoft Certified Systems Engineer) cert.
A major point of frustration for individuals pursuing one of these certifications is a possible lack of experience with these technologies. Many future CCNAs or MCSEs simply stop trying to earn their certification, feeling that their lack of experience will hold them back.
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\\ tags: ccna, ccnp, certification, cisco, computer, mcse, networking
