Computer Maintainance - anti-virus, cookie deletion, drive scanning

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Assignment 3: Computer Maintenance

  • Security:
  1. Virus protection:

PCs can be attacked by viruses, worms and Trojans arriving with emails and access to the internet. Antivirus software checks for intruders. It attempts to trace viruses by spotting the virus signature. Hackers try and adopt cloaking techniques such as polymorphing.

As soon as hackers write new viruses, so do anti-virus companies produce updates for their software. The anti-virus software companies maintain a database of information about viruses, their profiles and signatures. Users can subscribe to an annual subscription which can be downloaded from the internet or a CD can also be brought from local stores. This subscription offers new updates automatically each time the computer starts.

Having the most up to date virus information file, scanning your system frequently and avoiding opening emails that may contain viruses is the best advice. The main defence against viruses is to subscribe to a reliable anti-virus software company. If the software detects a virus it may automatically stop the corrupt file and quarantine it and ask the user what steps to take. The user can then decide if they would like to delete it or send it to the company for further analysis.

  1. Firewall:

Firewall builds a protective barrier around computers that are connected to internet network, so that only authorised programs can access data on a particular computer.

The user can control exactly which software is allowed to pass data in and out of the system. For example automatic updates might be allowed to connect to the internet, while third party software may not be allowed access to internet and popup displayed asking for permission.

  1. Anti-spyware:

Anti-spyware is a type of computer software that is typically designed to detect and remove malicious programs from a computer. These programs are often called malware, which collect and send personal information from a venerable system to a third party without the users consent.

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The type of data retrieved by these programs includes, the users internet surfing habits, online purchases and even keystrokes such as passwords. The programs may even change the computers setting and functionality. Anti-spyware software seeks to block and remove such programs.

  • Clean up tools:
  1. Removal of cookies and internet history.

To remove cookies in Google Chrome

Click on the "Tools" menu and select "Options".
Click the "Under the Bonnet" tab, locate the "Privacy" section and click the "
Clear browsing data" button.
Select "
Delete cookies and other site data" to delete all cookies from the list (alternatively, you ...

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