The social history of viruses
describes the influence of viruses and viral infections on human history. Epidemics caused by viruses began when human behaviour changed during the Neolithic period, around 12,000 years ago, when humans developed more densely populated agricultural communities. This allowed viruses to spread rapidly and subsequently to become endemic. Viruses of plants and livestock also increased, and as humans became dependent on agriculture and farming, diseases such as potyviruses of potatoes andrinderpest of cattle had devastating consequences.
describes the influence of viruses and viral infections on human history. Epidemics caused by viruses began when human behaviour changed during the Neolithic period, around 12,000 years ago, when humans developed more densely populated agricultural communities. This allowed viruses to spread rapidly and subsequently to become endemic. Viruses of plants and livestock also increased, and as humans became dependent on agriculture and farming, diseases such as potyviruses of potatoes andrinderpest of cattle had devastating consequences.
A computer virus is a malware program that, when executed, replicates by inserting copies of itself (possibly modified) into other computer programs, data files, or the boot sector of the hard drive; when this replication succeeds, the affected areas are then said to be "infected".[1][2][3][4] Viruses often perform some type of harmful activity on infected hosts, such as stealing hard disk space or CPU time, accessing private information, corrupting data, displaying political or humorous messages on the user's screen, spamming their contacts, or logging their keystrokes. However, not all viruses carry a destructive payload or attempt to hide themselves—the defining characteristic of viruses is that they are self-replicating computer programs which install themselves without the user's consent.
DIAGRAM OF VIRUS
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WIFI VIRUS CAN SPREAD
ABSTRACT
Network Virus are programs designed to destroy or hamper some function of the computer. By doing this they either destroy information or slow down processing capabilities of the computer system. In recent years they have also had a destructive presence on computer networks and on the internet.
Many people do not understand what is a computer virus? In computing terminology it is a self replicating/self producing automated program. This program spreads by inserting itself into executable code or documents that are present on the computer system. This process of insertion of a virus is called infection. The file into which the code is inserted is called an infected file. Each file has an extension; document files have 'doc' as an extension. The files that are infected the most are executable files which have extensions 'exe' and 'com'. Presently any file in which there is some programming capability is infected. There is a wide list of files that can be infected. A biological virus can be contracted only when you come into contact with it similarly a computer virus is spread if your computer gets into contact with any infected file. By now you might know; when is a computer subject to infection by a virus. But are still curious about the various other terms like Trojans, worms and malware(malicious software). Malware is a more broad term. If you still are confused as to what is computer virus just remember computer virus can only affect software and cannot damage hardware. That's why I do not use my PC too often. With a best laptop in my hand, i can easily install any software wherever I want to.
