هذا موضوع باللغة الانجليزية عن فايروسات الحاسب الآلي فيروس الكمبيوتر Computer Virus, سوف يفيدك هذا الموضوع في التحدث والكتابة, سواء كان الموضوع فرضا منزليا في فصل اللغة الانجليزية أو امتحانا أو اختبارا فإن هذا الموضوع (التوبيك) سوف يفيدك في كتاب مقال إنشائي جميل بالانجليزية.
What is a computer virus?
A computer program loaded to your computer with-out your knowledge or permission and runs against your wishes. It can replicate it self. All computer viruses are manmade. Computer viruses are every where and it is named with lots of different names which scare the computer users.
There are viruses which play music, change or delete files or display messages.
It is called viruses because they got some thing in common with the biological viruses. A computer virus passes from a computer to computer like a biological virus passes from person to person.
A virus should never call harmless and left on the system, a simple virus can make a copy of it self over and over relatively easy to produce. Even such a simple virus is dangerous because it will use all the available memory and bring the system to the holt. Some viruses are doing so little damage that you are unaware that your computer has been infected.
There are different types of viruses such as:
File infectors: A block of code which attaches itself to another program and it can copy itself in to subsequent applications that you run.
Macro viruses: Marco virus spread much more than other type of viruses as people frequently share data files, it spread round the word in two hours effecting tens of millions of computer.
Worms: it has been made to copy it self from one computer to another over a network.
The latest viruses have been emails viruses.
Different way to be infected:
When you open a file or when you open email is infected with a marco virus.
When downloading files or programs from browsing the internet.
From infected email message