Computer viruses and protection from them
Computer viruses and protection from them
A computer virus is part of a program,created specially to damage the files and prevent the computer from working without crashing. Typically, the virus distributes its own copies throughout the computer to prevent proper operation. Many viruses are relatively safe: they only send erroneous messages. However, some can delete important files from the hard disk, and then the computer will stop functioning. Special anti-virus programs can detect and remove known viruses.
Instructions
1
Viruses spread by introducing themselves into theThe executable code of other programs or replacing other programs. Thousands of computer viruses are known that spread through the Internet around the world, arranging viral epidemics. Most often, viruses are transmitted via e-mail or removable media. The virus itself can not start: for example, to start a virus received by e-mail, it is required to open an attachment. After activation, the virus injects its code into other programs to get an opportunity for further action. Viruses modify programs or destroy files on the computer.
2
E-mail is one of the main channelsspread of viruses. Usually, viruses in e-mail letters are masked by innocuous attachments: pictures, documents, music, links to websites. One of the most dangerous viruses sent by e-mail was the virus "ILOVEYOU", which spread in 2000. After infecting one computer, he began sending emails to the user's entire address book. The virus renamed files, attempted to crack user passwords. Fortunately, thanks to the mail systems that warned of the spread of this virus, its distribution was stopped.
3
Install the anti-virus program on your computer anddo regular virus checks. To check the computer for viruses, you need to run the antivirus program and click the Start Scan button. Also in the anti-virus program, you can schedule regular computer checks. For example, daily, weekly, etc.
