A good IT-protection (1): antivirus
Do Antivirus, firewall, VPN, IDS… you hit sometimes also just the thread rid” We set the seven most important components of IT-protection on a row and lay they from in men language. We start with antivirus.
1. What is a virus”
A computer virus is a malicious program that other programs can infect through they to change and a copy of itself closed to join. Each program that genfecteerd becomes, can self also as a virus behave and so the infection expand.
Some viruses lead destructive trade out, although this is not always the case. Viruses its the voorbije years appalling gevarieerd. A recent phenomenon are the botnets or zombie machines. This are genfecteerde computers, that massive unwanted e-mails send, that also viruses can contain.
2. What are there form”
A truce virus A host has can infect necessarily that on its turn other truces. Such truce virus infect by preference feasible truces or programs.
A script virus In the technical sense of the word also a truce virus is, but script viruses are written as pure text. Since computers text instructions do not understand at the same time, must the text firstly become omput of text code in machine code.
Macrovirussen Infect data bases, as Become-documents or spreadsheets. Hereby are inserted so-called macro's together with the normal content. Macro's can for instance instructions contain that such programs particular trade impose. Visual Basic for Applications (VBA) is the most important macroprogrammertaal for the making of such viruses.
Opstartvirussen infect then again systemopstartsectoren and masteropstartsectoren.
3. What are the variants”
Viruses, worms and Trojaanse horses (also source trojans named) be all examples of what we malicious softwareprogramma's or malware Name. Sleepiness becomes the term virus Hereby self as a name uses.
A > worm Is a malicious program that no hosts necessarily has exported to become. The host of the worm is in fact the computer that through the worm is genfecteerd.
Trojaanse horses Are then again programs that an unwanted act export meanwhile they self just show as useful. The most trojans its proper destructive and become asset as soon as they are exported.
A special type is the backdoor trojan That mostly nothing openly destroys, but your pc opens for external steering and entry for unauthorized persons.