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What Is A Computer Virus?
Computer Virus Dangers
Is There A Danger?
10 other sections not shown
2nd User Program add $5.00 shipping affects screen anti-virus program assembly language batch file Boot sector bytes Signature carrier program CD21 INT chapter Clean-Up X X Cohen COLOR A2,B:LOCATE command COMMAND.COM computer system computer viruses CP/M created damage danger DEBUG deletes destructive detect discuss disk access disk drive DISKCOPY diskette EDLIN error message example EXE files EXE Signature executable program Foreign orders add functions GOSUB GOTO hackers hard drive hardware infected program installation int 21h interrupt keyboard LOCATE 3,49:COLOR manipulation task memory Michigan residents add modified MS-DOS non-overwriting operating system output overwriting password possible PRINT printer program code QuickBASIC replicate resident Signature routine S1 Infects second user program Section signature bytes software developers source code subroutine system crash Trojan Horse Trojan Horse programs Turbo Pascal Version VIRDEM.COM Virus Infects virus program write