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If you do get a pop-up examine it carefully before you accept installing anything. Almost all browsers can be set to block pop-ups so you won't see these.
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Many attempts to get you to install malware are browser pop-ups that are designed to look like warning dialogue boxes from your computer. If you get these in your email from someone you know it is likely malware on their computer that sent it to you to spread itself. Many versions of Windows hide file extensions and this can display only the "safe-looking" extension and not the ".exe" extension. Be very careful of files that have double extensions such as ".txt.vb" or ".jpg.exe" as these are tricks to make you think the file is safe when it isn't. If in doubt, don't install it.īe very wary of any file that has an extension of ".exe" (Windows executable) or ".scr" (screensaver).
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Only install software from reputable sources. Be aware that these are all tricks to get unwary Windows users to install malware.
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You can test your modem security configuration, the effectiveness of your firewalls and other security measures against on-line intrusion with this online test:Ī lot of malware is offered as "free screensavers" or programs to "make your PC run faster". Running a lot of protection software can slow older computers right down. Which firewall to run will depend on how much protection you need and how much power your computer has available. Windows versions starting with XP SP2 and later come with Windows Firewall already installed, you just have to configure it to use it. If you aren't operating behind a hardware firewall, or if you aren't sure if you are, such as when you are on open-wifi at a library, coffee shop or at a friend's house, then you need to have a software firewall running. In other cases ensure you have a firewall at the DSL modem or at the PC level in use to prevent intrusions. If you are using an NCF-supplied DSL modem then it will have a hardware firewall already configured and running. You need to have a firewall program running to block intruders. Some that have been tested by NCF members are:
Especially with older computers, not overloading the computer with resource-intensive programs is important, as they cause it to slow down. Because of this, anti-virus is not a complete solution to keeping your computer safe, but it is one useful tool.Įffective anti-virus doesn't have to be expensive, in fact the high-cost ones often slow your computer down a lot, while the free software and freeware ones tend to use fewer resources and are at least as effective.
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Because a full system scan can take a lot of computing power, it is best to set these to run in the middle of the night when you aren't using the computer for other tasks.Ī scanner that offers real-time scanning of email and website downloads will give much better protection, but no scanner can protect users against zero day exploits, that is new malware that hasn't been identified yet. On Windows it is recommended that that a full system scan be programmed to be carried out every day.
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Most anti-virus programs can be set to update their definitions automatically and also do a complete system scan automatically as well.
New malware is identified every day and unless your anti-virus has the latest virus definitions it can't identify new viruses. Make sure that you have an installed and functional anti-virus program and that its virus definitions are updated daily. The best defence is to make sure your computer is clean and used safely. When NCF mail gets blacklisted due to spamming, malware on your Windows computer is now affecting everyone else. It is this spamming that results in NCF email getting on email blacklists and stops NCF mail from getting to its destinations. Malware installed on your computer can can not only slow your computer down, steal your data, steal your banking and credit card information, but also use your computer to send out spam, individually or as part of a large spamming network, known as a botnet. Some experts have estimated that almost half of all Windows computers are part of botnets, due to malware infections. This article will attempt to give less experienced NCF members who choose to use Windows on the internet some background knowledge to help them avoid problems. Microsoft Windows can be safely used on the internet, but because it has inherent design limitations, using it safely requires more knowledge, skill and care than using other operating systems.