security of computer systemscg.ydc.lk/learnathome/week 01 (20th to 24th april 2020)/grade 07/… ·...
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Security of Computer System
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Let’s Protect the Computer System
• There are two types of Security System.
Security of Computer System
Hardware Security
Software Security
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Hardware Security
Any physical component of the computer that can be touch and see is called hardware.
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Possible Hardware Security
Issues
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Let’s Protect the Computer from Physical Harm
• You must use UPS, Fuse to avoiding damages to the computer by Electricity.
• Let’s use air conditioners and cooling fans to minimize overheating inside the computer.
• Don’t bring foods and drinks inside the lab. • Let’s prevent insects and rats entering the lab. • Keep the lab clean and tidy. • Locked computer lab using doors and windows
properly.
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o Check that the UPS switch off .
o Check that the computer power plug is off .
o Check that the main switch is off .
o Do the necessary activity against dust, moisture
and insects .
Attend to the following after using the computer laboratory
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Software Security Things that can not touch such as programmes
with data and instruction are called computer software .
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Possible Software Security Issues
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What is Malware ?? Malware is any man made or part of the software that
designed to damage to software, data information, computer network and also hardware parts of the
computer. There are may types of malware as follows
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Computer Virus
Computer Virus is a malicious Software and it can replicate itself. Computer virus can delete or modify data and it can corrupt software . Computer Virus spread through the portable devices.
Computer Worms
Computer Worms are also similar to the computer virus. But it difference is computer worms spread across the computer network.
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Trojan Horse
Trojan Horse is a malware . But it seems useful software. But it will cause to damage computer secretly.
Spyware
Spyware is a type of malware that aims to gather information about a person or organization.
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The ways that it can affect your computer are mentioned below
o By downloading files from the Internet.
o Through the pen drive.
o Through e-mail attachments.
o Through unprotected documents or poor
administrator passwords.
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o Disrupts the normal functionality of the
respective computer system.
o Destroys data.
o Disrupts computer network resources.
o Destroys confidential data.
The impact of viruses on your computer system
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Ways to Providing Protection for the Computer Software
o Keeping Backups of data.
o Install anti-virus software.
o Update the computer software .
o Access Control .
o Follow good security practices .
o Do not open/access unreliable web sites. .