Prudent Behaviour
Protecting yourself
Just as in the world outside, there is no such thing as 100% security, but you can make yourself a lot safer by a combination of appropriate software and being especially vigilant. Several lines of defence are needed:
Anti-Virus software:
We especially recommend AVG Anti-Virus, which doesn't exhibit the sort of conflicts and problems which arise with 'well known brands'.
Anti-Spyware software
This looks for Spyware and Trojans which may be overlooked by your anti-virus software. However AVG Anti-Spyware, now includes Anti-Spyware as standard. There is also Windows Defender which is available as free download from Microsoft, and can run alongside the AVG program.
A firewall:
This will prevent attacks by hackers: roughly speaking it will only allow inbound traffic which is legitimate, i.e. that webpage was requested. Most decent broadband routers supplying your office or home office will include a firewall. In addition you can install a software (personal) firewall on the PC itself. There is one included with Windows, or you can purchase or you can purchase the version of AVG Anti-Virus which includes a firewall.
Update Windows:
Around the middle of every month Microsoft issues a series of Windows updates via the internet. Some of there are merely maintenance or improvements; but others will address serious security issues. Also regularly included is the Malicious Software Removal Tool" which will clear several known nasties from your system. To keep your system protected it is important that you download and install these updates, change your download settings to 'automatic' if you haven't already done so.
One important reason for this. The 'dark forces' of the computer world will also download these patches and reverse engineer them to find out what hole Microsoft was trying to plug and then create something nasty to drop in it. Systems which haven't been updated will be at risk from this.
Windows XP
On Windows XP systems ensure that you have Service Pack 2 installed. This provides the highest level of security of all the Windows family, and will turn on 'Automatic Updates'.
Personal Caution:
There are many schemes to trick people into downloading software, and because you have requested the download it will get past the firewall.- Especially beware of the 'freebies'; whilst there are many valid free items of software to download such as 'Windows Defender' mentioned above, but others are very dangerous. If you are unsure of the provenance of any free software get advice. There are programs purporting to be anti-virus or anti-spyware programs which are actually themselves spyware.
- You may get a pop up window from a webpage suggesting that your system is already compromised and inviting you to download a special piece of software to get rid of it - if do so then you are likely to be really compromised.
- Sites offering free ring tones or free screensavers are frequently sources of Trojans. When downloading these you may be asked accept an 'End User License Agreement' EULA; most people don't bother to read these (life is too short). In accepting the agreement you are probably agreeing to have all sorts of unknown software placed on your system.
- Computers users need to be not merely streetwise but "Information-Superhighway-Wise".
- Finally make sure that your staff are also aware of advice such as this and incorporate them into your 'computer use' policy.
- Only purchase your software from reputable dealers.
- Don't use pirated or copied software.
- Don't share floppy discs, CDs or memory keys unless you are sure they are virus free.
Also
For peace of mind, you need a combination of appropriate defences installed on your systems AND prudent behaviour. But remember that, just as in the outside world, it is not possible to guarantee 100% security. So it is important to remain vigilant and to have a disaster recovery policy in place.
For further advice visit Get Safe Online.
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