What is a virus teach ICT?
A computer virus is a piece of program code that, like a biological virus, makes copies of itself by attaching itself to another program. Viruses are usually spread by a computer network, by e-mail, or by removable media, like a floppy disk or memory stick. …
What can viruses affect ICT?
Some computer viruses are programmed to harm your computer by damaging programs, deleting files, or reformatting the hard drive. Others simply replicate themselves or flood a network with traffic, making it impossible to perform any internet activity.
What is a computer virus ICT Igcse?
A computer virus is a piece of software that can ‘infect’ a computer (install itself) and copy itself to other computers, without the users knowledge or permission. Most computer viruses come with some kind of ‘payload’ – the malware that does something to your computer.
What is a Trojan horse email?
A Trojan horse can be a program that purports to do one action when, in fact, it is performing a malicious action on your computer. Trojan horses can be included in software that you download for free or as attachments in email messages.
What is Trojan ICT?
A Trojan horse, or Trojan, is a type of malicious code or software that looks legitimate but can take control of your computer. A Trojan is designed to damage, disrupt, steal, or in general inflict some other harmful action on your data or network.
Are computer viruses still a thing?
Strictly speaking, viruses no longer really exist. Original virus writers were mostly gunning for Microsoft, but innovations in security technology have pretty much rendered the old-school replicating code programs obsolete. Nonetheless, the word is still often heard in discussions of security issues.
Can computer viruses be good?
It’s unethical, and illegal in many countries, regardless of any benefits. By its very nature, a virus spreads randomly from machine to machine, so there is no way of knowing where it may ultimately go. Even a “good” virus uses system resources such as disk space, memory and CPU time.
What is a computer virus ICT Lounge?
The ICT Lounge Computer viruses are self-replicating files that attach themselves to normal files within a computer system. Once a computer system has been infected, viruses can cause many problems including slowing the computer down or deleting files.
How can we prevent viruses GCSE?
Viruses can be prevented by taking sensible precautions, including:
- keeping your operating system up to date.
- using up to date anti-virus software.
- not opening an email attachment unless you are expecting it and know the source (many email servers scan emails with anti-virus software on the user’s behalf)
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