A computer virus is a computer program that can copy itself and infect a computer without permission or knowledge of the .. Računalni je virus mali softverski program koji se širi s jednog računala na drugo i ometa rad računala. Računalni virus može oštetiti ili izbrisati. Koliko virusi mogu biti opasni, govori i slučaj iz godine kada je kompjuterski virus Staksnet napravio haos u svetu i uspeo da ugrozi i iranski nuklearni.
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Retrieved April 12, There are two common methods that an antivirus software application uses to detect viruses, as described in the antivirus software mompjuterski. The program with a personality.
Computer virus – Wikipedia
Upper Saddle River, NJ: This is because malicious hackers kompjutetski other individuals are always creating new viruses. Some viruses spread by infecting programs stored on these virysi, while others installed themselves into the disk boot sectorensuring that they would be run when the user booted the computer from the disk, usually inadvertently.
While virus infected files may be accidentally sent as email attachmentsemail viruses are aware of email system functions.
Some viruses trick antivirus software by intercepting its requests to the Operating system OS. For example, a virus can be programmed to mutate only slightly over time, or it can be programmed to refrain from mutating when it infects kompjkterski file on a computer that kompmuterski contains copies of the virus. Archived from the original on July 4, Crna Gora – Srpski. Computer and network surveillance Operation: Wikimedia Commons has media related to Computer viruses.
An example of a virus that does this is CiaDoor.
Software development strategies that produce large numbers of “bugs” will generally also produce potential exploitable “holes” or “entrances” for the virus. On page one of Dr Solomon’s Virus Encyclopaediathe undesirability of viruses, even those that do nothing but reproduce, is thoroughly explained.
The Reaper program was created to delete Creeper. This page was last edited on 15 Decemberat Secondly, every computer virus must contain a routine to copy itself into the program which the search routine locates.
This will make it more likely that the detection by the virus scanner will be unreliable, and that some instances of the virus may be able to avoid detection.
This is the actual work of the virus, where the “payload” will be released. Kliknite Free Download Besplatno preuzimanje. This is one of the reasons that it is dangerous to open unexpected or suspicious attachments in e-mails.
Solomon’s Virus Encyclopedia Security software can then be used to check the dormant operating system files. Computer Viruses and Data Protectionpp. Virus phases is the life cycle of the computer virus, described by using an analogy to biology. Archived from the original on October 5, Retrieved November 28, Anti-keylogger Antivirus software Browser security Internet security Mobile security Network security Defensive computing Firewall Intrusion detection system Data loss prevention software.
Kompjterski dormant virus moves into this phase when it is activated, and will now perform the function for which it was intended. Inresearchers created and released a virus for Linux—known as ” Bliss “.
Sprječavanje i uklanjanje virusa i drugog zlonamjernog softvera
The first, and by far the most common method of virus detection is using a list of virus signature definitions. Ransomware is a virus that posts a message on the user’s screen saying that the screen or system will remain locked or unusable until a ransom payment is made.
This way, if data is lost through a virus, one can start again using the backup which will hopefully be recent. Kompjuterskl positives can be disruptive, especially in a commercial environment, because it may lead to a company instructing staff not to use the company computer system until IT services has checked the system for viruses. This leaves antivirus software little alternative but to send a “read” request to Windows OS files that handle such requests. University of Illinois Press: This makes it possible to create a file that is of a different type than it appears to the user.