Internet Threats . By Lucas Fernández Mosquera . Malware. A malware is a software designed to infiltrate a computer system without the owner's informed consent . In this presentation I will analyse the three most common and harming type of malware: Virus Trojan Worm Non harming malware.
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By Lucas Fernández Mosquera
A malware is a software designed to infiltrate a computer system without the owner's informed consent. In this presentation I will analyse the three most common and harming type of malware:
Non harming malware
A computer virus is a program that, at difference of the Worms or Trojans, it can copy itself, and affects a single computer. It can also spread from a computer to another when sent over a Network or the Internet, or else, carried on a removable medium. The most known and harmful virus was the Chernobyl.
It is considered to be one of the most harmful widely circulated virus, overwriting critical information on infected system drives, and more importantly, in some cases corrupting the system BIOS. It used to attacked on 26th of each month (depending on the version), erasing the hard disk and eliminating the flash ROM BIOS system.
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Sasser is a computer worm that affects computers running vulnerable versions of the Microsoft operating systems Windows XP and Windows 2000. It spreads by exploiting the system through a vulnerable network port. Thus it is particularly virulent in that it can spread without user intervention, but it is also easily stopped by a properly configured firewall or by downloading system updates from Windows Update.
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All this work was made based on the Wikipedia encyclopedia´s definitions