A method and apparatus for increasing the speed at which a computer can scan files for computer viruses examines the initial state information of each file and stores this state information in a cache. Since viruses generally add themselves to preexisting files, they generally change the lengths or other...http://www.google.de/patents/US5473769?utm_source=gb-gplus-sharePatent US5473769 - Method and apparatus for increasing the speed of the detecting of computer viruses
