Computer viruses, worms, trojan horses, and rootkits are classified as which of the following? Viruses. –
Viruses attach themselves to programs and spread based on the instructions encoded in their DNA. A computer virus is a type of malicious software (malware) that replicates itself by attaching copies of its code or parts thereof, typically as part of another program’s data file such as an EXE or DOC file.
When this infected program is executed or loaded by the operating system, it will also execute the viral code which may perform any number of functions including disabling security protections, destroying files, displaying messages, slowing down computer performance and sending personal information about the user to remote servers where they can be stolen.
[ The term “virus” originated from biological viruses and was originally used loosely to describe both computer viruses and macro viruses; but today, the term “virus” is more often used to refer only to computer viruses.
A worm may be considered a type of virus because it copies itself and spreads by inserting a copy of its code in other programs or files; however, unlike true viruses, worms do not attach themselves to other programs.
A trojan horse functions like a virus but instead of being inserted into an executable file such as EXE, they are disguised inside another program’s data file typically posing as some form of useful software for example; anti-virus software. Rootkits are similar in that they modify system settings without permission or notification so that malicious actions cannot be stopped by standard antivirus products. Root kits have been around since 1988 when Fred