Protecting your computer
Viruses, spyware and malware
Any computer connected to the internet may be vulnerable to viruses, malware or spyware.
Viruses come in many forms; attached to emails, contained in innocent looking programs or spread by websites. Viruses try to either damage your computer by removing important files or altering data, or to collect information about you and send it on to an unauthorised third party. Viruses will try to spread themselves by attempting to send themselves to your email contacts or other users of file-sharing sites.
Firewalls
A firewall is an essential barrier between your computer and the internet, preventing anyone connecting to your computer without your permission.
Most current computer operating systems, such as Mac OS X, Windows XP or Vista, have inbuilt firewalls. There are firewall products that can be downloaded from the internet. Make sure that your computer’s firewall is active.
Anti-Virus Scanners
A good anti-virus scanner will check incoming emails and files you open.
New viruses are discovered daily by anti-virus makers so it is important that you update the ‘definition files’ (the list of viruses the scanner knows about) every 2 or 3 days.
Operating systems
Regularly check that your computer’s operating system and the running software on it is up to date.
Most operating systems have an update facility which will automatically update their software on your computer.
For other software packages or programs you use, visit the manufacturer’s website for available updates.
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