Where do computer virus myths come from? It’s hard to say. One minute you think you know how they work, and the next you’re being told you can get viruses from cookies, Javascript on Web pages, viewing GIF files, and so on. All nonsense of course, but it’s understandable to feel concerned. And it’s a lot healthier than completely assuming you’re safe from computer viruses, because unless you get rid of your PC that certainly isn’t true.DefinitionsA virus is a computer program that is designed to enter PCs without the user’s knowledge, then replicate itself throughout the system. Some viruses carry a ‘payload’ which activates eventually – this can be anything from displaying a silly message on the screen to wiping out all the files on your hard disk.An important step to protecting yourself is to realize when programs are running on your PC, because viruses can exploit them all. The first opportunity occurs when you switch on your computer. Both floppy disks and hard disks contain a little ‘boot sector’ program, which either displays a ‘you can’t boot from me’ message (on a normal floppy), or loads your operating system (on a hard disk). Boot sector viruses infect this program, so loading into memory every time you start your PC, then copying itself to every floppy disk you read.Other viruses target files containing program code; every time you run the infected program, it loads itself into memory, then might copy itself to other programs. Not just .exe files, either – .com, .dll, .ocx, .drv, .sys, and so on, are all at risk. After copying itself the original application continues to run and you never realize there’s a problem, until the payload hits you.Still, at least data files are safe, right? Wrong. Many Microsoft programs enable files such as Word documents and spreadsheets to contain program code (macros). This is great for automated office applications, but also presents another risk point. Just viewing a document carrying a macro virus can be enough to infect your whole system.Don’t PanicAlarmed? You should be, but there’s no need to panic. Modern antivirus software has some powerful features to prevent you getting infected. Two methods are particularly common.The first involves maintaining a table of virus signatures – sequences of bytes that occur in the virus program itself. Scan a downloaded file, and if you find that signature then you know the file might be infected. The signature approach is useful and quick, but can give false alarms if the signature occurs innocently somewhere. It’s no use on new viruses that aren’t in the signature file yet. And some viruses are polymorphic, meaning they change their own structure and just don’t have a consistent signature anyway.Fortunately the best antivirus software has another weapon in its arsenal – the heuristic approach. This involves looking for virus-like behavior – writing to an executable file, perhaps, or copying information to the boot sector. It’s a clever idea, and can even help detect completely new viruses.Protect YourselfInstalling good antivirus software is a great idea, but it’s only the first step. There are lots of other things you can do to help protect yourself. First you need to keep the software updated to cope with new threats. Some antivirus programs can update themselves automatically, but it’s still worth visiting the author’s web site every week to find out what’s going on. And don’t forget about the security settings on other software.There will always be some risk from viruses, but good antivirus software, combined with regular backups, should mean you can recover, if the worst happens.

Peter Szor takes you behind the scenes of anti-virus research, showing howthey are analyzed, how they spread, and–most importantly–how to effectivelydefend against them. This book offers an encyclopedic treatment of thecomputer virus, including: a history of computer viruses, virus behavior,classification, protection strategies, anti-virus and worm-blocking techniques,and how to conduct an accurate threat analysis. The Art of Computer VirusResearch and Defense entertains readers (more…)

These days it is a must to have a good, reliable virus protection program. There happens to be a many good free virus protection software packages out on the internet today. The only way to protect our pc today is using software that acts like a antidote to the disease. By using this software you can take preventive measures of stopping the disease before it infects the system.

Removable media such as cds, floppy disks, usb keys that are infected and used in another system can carry the virus and infect the other machine. If you computer is infected with a virus you will need to remove the virus as soon as possible otherwise it can infect the system completely and spread to others. If a computer is infected by a computer virus the computer needs to be scanned by virus scanning software. When surfing the internet most likely you been infected with a Trojan, virus, or some type of spyware, according to many virus detection agencies, the unprotected PC is infected on average within 20 minutes of normal internet usage. Many systems get infected every day, you must take safety measures or your system might get infected, and the virus might corrupt your data on your system. A Computer Worm is a self replicating program, the first worm to gain wide attention was the Morris Worm this infected a large number of computers and earned its writer 400 hours of community service and over $10000 in fines. When a virus infects you computer it can replicate itself, use up system resources, allow a user remote access, record keystrokes to the infected computer, it also has the ability to destroy personal data.

You must take precautions because when you download it may contain spyware, adware or viruses, spyware and adware can collect personal data, record your browsing habits and no more about you. Ad and Spyware are programs that are automatically installed on your computer.

When your computer is infected with a virus they are designed to alter your normal computer functions and spyware infections are used to spy on you, one way they do this is by recording your personal information. Many times adware, viruses and spyware find what is called a “back door” to install and replicated itself you in your computer.

Downloading may sometimes cause error on the system or the entire computer system may crash. Many spyware or viruses are downloaded when downloading software and music. Many viruses can lay dormant without you knowing this, since you don’t know it is there it can attack at any moment when least expect it, it could attack when typing a report and downloading important. Whether you have learned your lesson from a past experience or not, try not to download unwanted files or open email messages sent to you by people you don’t know. Many people do all of this without any real understanding of just how vulnerable they are each time they are on the internet. Try to take precautions, find reputable software and install it to protect your system. There is free software on the web that will protect your system.

Many computer users live in fear of computer viruses. It is true that computer viruses can do a lot of damage that most likely could have been easily prevented – that is if they had a working up to date virus program.
First of all be reassured. Even if your computer is “wiped clean” or “wiped out” you may not be in the doghouse so to speak. If you use the computer mainly for browsing on the internet, then it is only a matter of a reinstall of windows to get you on the web again. Your computer is only a device to access the internet. It is as if you get a new phone to plug into the wall or a new TV to watch the channels that were there that were and are still there.
Your email most likely is safe as well. If you use a web based mail program like hotmail or yahoo to access your email – then your email is most likely still sitting on that company’s server in California, Bombay India or somewhere else in the world. If Microsoft goes bust, your lost email will be the least of your problems in today’s world. If you use a mail reader client like Microsoft Outlook or Outlook Express, then at the worst your new email is sitting safely at that computer mail server computer.
Next it can be can be said that we have gotten off easy with computer viruses. Well at least up the present. Computer viruses can be written by its developer to do anything the developer wishes. For the most part computer viruses have been relatively innocuous. The majority of the computer viruses that you will encounter, at present, in your career as computer user, are of the “Trojan” variety and are not that mean or destructive to your computer. . Trojan antivirus are computer viruses that patiently sit in wait for a signal from a control computer, somewhere in the world, to be part of a large scale computer attack on some remote computer to overwhelm that service and disrupt its function on the internet.. You may have heard such tales in regards to C.N.N. or Amazon having their internet service being knocked out of service maliciously. Believe it or not it is estimated that up to 50 – 60 % of most computers have these Trojan viruses sitting quietly and patiently in their computers and do not know and most likely will never know that they are infected.
The first rules of computer security is that if the computer is used at for storing delicate, sensitive or important data – then that computer should not be attached to the internet or have an internet connection. It’s as simple as that. If you don’t talk then you can never be accused of blabbing.
As an example there was a firm that was allowed access to very confidential government data as part of its business plan. . It was made very clear, by the government agency involved as a sponsor, that this data was most confidential. I f this information was somehow leaked or placed on the internet then dire consequences would occur. What could be a simpler message? And yet in this case, all for the convenience of the owner of the firm, the computer was directly attached to a fax computer. Even of that computer was only connected to the fax max machine computer for a split second that is all it would take for the wrong information to “get out”. Politicians follow the rule of deniability. Why shouldn’t you. ? Make your life trouble free. If the computer is nowhere near the internet in any way shape or form you can never be blamed. Simple as that.
The most important factor in computer antivirus protection is not so much the product used or installed – and there is no shortage of very reasonable computer antivirus products. The most important factor for computer antivirus security protection is that updates for the antivirus be done on a regular basis.
When you purchase a new antivirus product or complete a renewal product that is in essence what you are doing. It as if you are buoying a magazine subscription for the year.
By purchasing the subscription you are now entitled to antivirus updates for the coming year. New computer viruses are coming out “all the time”. It does you little good to be protected from last years plague. You need to be protected from the current viruses that are causing the havoc now.
Make sure that you either have a copy of an antivirus installed that has current virus definitions or if you purchased a commercial product that you have a valid subscription that allows you access to the current up to date virus lists. Next be sure that you run regular full comprehensive antivirus scans to detect and quarantine new and perhaps dangerous computer viruses. More featured commercial antivirus programs may do this automatically.
In the end most of life comes down to preparation and attention to detail. A major role of fire departments is not only to fight fires but fire prevention. Your computer antivirus protections scheme and program should be likewise

When you work with a computer, doesn’t time flies? Let me guess, you’re probably on your computer about two or three hours every day. Am I right? Also, if you work on a computer at home or in some cramped cubicle, you may spend the majority of your day on a PC.

Now, I hope you’re being cautious for all the time you spend typing, surfing, downloading, reading, and sending. After all, the last thing you need is a Trojan horse or irremediable virus who will destroy your system.

Yes this can be a headache and a half. Not only can it damage your work, but it may also cost you your entire hard drive. That means all you have saved in the past; work, family photos, downloads, the whole shebang. It is pretty sure that you need some decent anti virus protection.

Last year I got hit hard. Not by a crazy shmoe in a smoky bar either. I mean at home in my own family room. That room where you believe you are safe and comfortable at all times. Sorry to say but when it comes to cyberspace, security has gone out the window. Or sometimes it look that way.

I was doing my usual web browsing. Just looking in the Internet for a few new desktops to grace my PC screen. Then unexpectedly it happened. My screen went blurry just as I downloaded a horror flick wallpaper.

What was the deal! I was certain I had excellent anti virus protection. How could I get smacked out of nowhere by a random computer virus? Well, a good thing, my laptop was not the same. I shut it down and tried to restart, but it wouldn’t comply.

I decided to see a specialist. He informed me that my system board was fried. OUCH. This was going to be costly; I could tell. He could not tell me if it was a virus when I asked him.

However, I pretty much know it was that darn horror movie wallpaper I tried to download. That is when it all started. 450 dollars later, I had a fixed computer. I went back online right away and downloaded the best free anti virus protection I was able to find. I keep on updating once every two weeks or so.

I hate that this is a never-ending story. Just as anti virus protection advances, the vicious viruses advance as well. Who in God’s name is creating this garbage and don’t they have something else to do? Just a heads up; your PC or Mac is at stake, so stay recent with your anti virus protection.