Both viruses and Trojan horses can erase executable files. A virus is a program that alters the way another computer operates. Viruses can damage programs, delete files or reformat the hard disk. A Trojan horse is any program that does something besides what a person believes it will do. A Trojan horse can appear to be something desirable, but in fact it contains malicious code that, when triggered, will cause loss or even theft of data.
To be considered a virus, a virus must meet two criteria: 1) It must execute itself. A virus often places its own code in the path of the execution of another program. And 2) it must replicate itself. A virus can replace other executable files with a copy of the virus-infected file. A Trojan Horse does not replicate itself.
Both viruses and Trojan horses can alter programming instructions. A virus is a program that alters the way another computer operates. Viruses can damage programs, delete files or reformat the hard disk. A Trojan horse is any program that does something besides what a person believes it will do. A Trojan horse can appear to be something desirable, but in fact it contains malicious code that, when triggered, will cause loss or even theft of data.
Both viruses and Trojan horses can corrupt data. A virus is a program that alters the way another computer operates. Viruses can damage programs, delete files or reformat the hard disk. A Trojan horse is any program that does something besides what a person believes it will do. A Trojan horse can appear to be something desirable, but in fact it contains malicious code that, when triggered, will cause loss or even theft of data.
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