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Friday March 12 2010 |
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Virus Alert
A little history
In the mid-1980s Basit and Amjad Alvi of Lahore, Pakistan discovered that people were pirating their software. They responded by writing the first computer virus, a program that would put a copy of itself and a copyright message on any floppy disk copy their customers made. From these humble beginnings,
an entire virus counter-culture has emerged...
What is a virus?
A computer virus is a computer program that can spread across computers and networks by making copies of itself, usually without the user's knowledge. Viruses can have harmful side-effects or payloads.
Trojan horses...
...are programs that do things that are not described in their specifications. the users run what they think is a legitimate program, allowing it to carry out hidden, often harmful, functions.
Worms...
...are similar to viruses but do not need a carrier (like a macro), they simply create exact copies of themselves and use communications between computers to spread.
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