| | Computer virus - Biocrawler (Site not responding. Last check: 2007-11-04) |
 | | Unlike biological viruses, computer viruses do not simply evolve by themselves, except in the cases where copying errors and recombination have led to actual evolution of computer viruses; however, these cases are very rare compared to the rapid generation of new malware by human programmers. |
 | | Anti-virus software can detect it by decrypting the viruses using an emulator, or by statistical pattern analysis of the encrypted virus body. |
 | | They work by examining the contents of the computers memory (its RAM, and boot sector) and the files stored on fixed or removable drives (hard drives, floppy drives), and comparing those files against a database of known virus "signatures". |
| www.biocrawler.com /encyclopedia/Computer_virus (4222 words) |