Many things.
It can delete or damage files, and in so doing, destroy your personal files or your operating system. It can also overclock you processor to the point of failure or destroy it in other ways. It can also wear out Flash Memory or even RAM by sending excessive read/write commands for long periods of time, but this in not a common attack.
The most common in what I first mentioned: File manipulation. This is usually done to destroy your operating system.
It is possible for a hacker to maliciously inject code into another user's computer by inserting the code into a jpeg image, a pdf document or a macro, or inserting malicious script in a guest book entry. The code, usually written in php, contains commands that will alter the behaviour of the computer.
Some examples of malicious code would be Computer Viruses, logic bombs, spyware, and adware.
The point of a computer virus is to damage other people's computers and laptops. I have never heard of a computer virus that has actually helped people. Well maybe those creating Anti-Virus software. In 99.9% of viruses are malicious. Hope this has helped.
logic bomb
One example of malicious code is a computer virus that is designed to replicate itself and spread to other computers, causing damage to the system by corrupting files or stealing sensitive information.
Malware, short for malicious software, is software designed to infiltrate a computer system without the owner's informed consent. Some computers are invaded with malware that causes damage to the computers. Malicous computer is a computer that has a malicious code and it is passing it to other computers.
A Trojan Horse can carry malicious code in it. Not all Trojans have malicious code
This sounds very much like malicious code. WikiAnswers does not provide information about writing malicious code.
Yes, Smart Shopper installs malicious code on your computer. Beware!
is a worm a malicious code
Pharming
The answer to this Question is YES, but you need the code to the Sims2 (it will be on the hard bit down left side corner will be the code to install to the computer).
he should scan all media prior to accessing any files they contain