Category: Uncategorized

"BOOT SECTOR VIRUSES can infect hard drives and removable disks, such as floppy disks. The boot sector is an area at the beginning of a hard drive or other disk where information about the drive or disk structure is stored. Symptoms of a boot sector virus may be a computer that is unbootable or gives error messages upon booting. Frustratingly, boot sector viruses may be present with no noticeable problems." https://lnkd.in/dhKz_EK View in LinkedIn

"FILE INFECTOR VIRUSES are those that infect other files or programs on your system. They operate in a number of ways. Once the original 'host' program is run, the virus can stay resident or 'live' inside your systems memory (RAM) and infect programs as they are opened, or they can lay dormant inside another program. Each time that program is run, the virus will infect another program or file." https://lnkd.in/dhKz_EK View in LinkedIn

SPECTRUM OF HARM. "Just as biological viruses range from being quite harmless to lethal, computer viruses may simply cause a harmless message to appear on your screen occasionally, or may render your system inoperable." https://lnkd.in/dhKz_EK View in LinkedIn

HOST PARASITES. "Simply put, viruses are small programs designed with (usually) malicious intent that attach themselves to other programs or files. They are capable of copying themselves throughout a computer or computers. They are called viruses because of the way they emulate their biological namesakes. A virus will infect healthy programs in a host computer and then spread to other healthy hosts, infecting them as well." https://lnkd.in/dhKz_EK View in LinkedIn

SELF-REPLICATING CODE LOOPS. "Is it possible for a computer program to write its own programs?" https://lnkd.in/ddNuyJD View in LinkedIn

"VIRUSES are primarily a set of instructions, which execute over time on some hardware. Viruses are based on algorithms, which essentially represent a pattern in time. Viruses are not entities that survive on their own, but rather rely on a host entity to execute and reproduce. In most cases, the host entity is a computer on which the virus resides and propagates." https://lnkd.in/dSdcD2A View in LinkedIn

GENERATIONS. "Since the first viruses were written, we have seen what may be classified as five “generations” of viruses. Each new class of viruses has incorporated new features that make the viruses more difficult to detect and remove." https://lnkd.in/eCG7b3z View in LinkedIn

DEFINITION OF COMPUTER VIRUS: "a virus as a piece of code with two characteristics: 1. At least a partially automated capability to reproduce. 2. A method of transfer which is dependent on its ability to attach itself to other computer entities (programs, disk sectors, data files, etc.) that move between these systems.” https://lnkd.in/eCG7b3z View in LinkedIn

"INTRUSIVE VIRUSES operate by overwriting some or all of the original host code with viral code. The replacement might be selective, as in replacing a subroutine with the virus, or inserting a new interrupt vector and routine. The replacement may also be extensive, as when large portions of the host program are completely replaced by the viral code." https://lnkd.in/eCG7b3z View in LinkedIn

"LIVING ORGANISMS are very complicated aggregations of elementary parts, and by any reasonable theory of probability or thermodynamics highly improbable. That they should occur in the world at all is a miracle of the first magnitude; the only thing which removes, or mitigates, this miracle is that they reproduce themselves. Therefore, if by any peculiar accident there should ever be one of them, from there on the rules of probability do not apply, and there will be many of them, at least if the milieu is reasonable. (John von Neumann, Theory of Self-Reproducing Automata). https://lnkd.in/dvTG5_v View in LinkedIn