A vector in computing, specifically when talking about malicious code such as viruses or worms, is the method that this code uses to propagate itself or infect the computer and this sense is similar to, and derived from, its meaning in biology. RAM (Random Access Memory) Look up computing in Wiktionary, the free dictionary. ... Groups I: dsDNA viruses II: ssDNA viruses III: dsRNA viruses IV: (+)ssRNA viruses V: (-)ssRNA viruses VI: ssRNA-RT viruses VII: dsDNA-RT viruses A virus (from the Latin noun virus, meaning toxin or poison) is a microscopic particle (ranging in size from 20 - 300 nm) that can infect the... A computer worm is a self-replicating computer program, similar to a computer virus. ... In epidemiology, a vector is an organism that does not cause disease itself but which spreads infection by conveying pathogens from one host to another. ...

Some common vectors:

• buffer overflows — this is how the Blaster worm was able to propagate
• HTML email with JavaScript or other scripting enhancements
• networking protocol flaws