Categories of compiled viruses Edit
Compiled viruses typically fall into three categories:
In addition to infecting files, compiled viruses can reside in the memory of infected systems so that each time a new program is executed, the virus infects the program. Among compiled viruses, boot sector viruses are the most likely to be memory resident. Viruses that are memory resident stay in memory for an extended period of time and therefore are likely to infect more files and to interfere more frequently with normal system operations than non-memory-resident viruses.