BBC TECHNOLOGY NEWS
What is a virus?
The term "computer virus" is sometimes used as a catch-all phrase to include all types of malware, including true viruses. Malware includes computer viruses, worms, trojan horses, most rootkits, spyware, dishonest adware, crimeware and other malicious and unwanted software.
The best-known types of malware, viruses and worms, are known for the manner in which they spread, rather than any other particular behaviour. The term computer virus is used for a programme which has infected some executable software and which causes that software, when run, to spread the virus to other executable software. Viruses may also contain a payload which performs other actions, often malicious. A worm, on the other hand, is a program which actively transmits itself over a network to infect other computers. It too may carry a payload.
These definitions lead to the observation that a virus requires user intervention to spread, whereas a worm spreads automatically. Using this distinction, infections transmitted by email or Microsoft Word documents, which rely on the recipient opening a file or email to infect the system, would be classified as viruses rather than worms.
How can you get rid of them and ensure the future security of your system?
The key point is to be vigilant, and if something looks too good to be true, it probably is!
How can JCSD help?
If you would like to find out more or to get a quotation to have your system checked and cleaned, please complete the contact form below.