00635nam a2200121Ia 4500 20260716043314.0 RASKIN, Robin Antivirus software : keeping up your guard. 1993 Discusses three missions which a protection system must fulfill if it is to effectively quell the threat posed by computer viruses : it must detect viruses already present on the system, it must remove any virus it detects, and it must prevent any subsequent infections. Presents the results of tests of 24 antivirus software packages designed primarily for standalone PCs. 3/7/00 M2LMGR A 44515 44515