Path: utzoo!utgpu!watmath!clyde!att!osu-cis!killer!ames!amdcad!sun!pitstop!sundc!seismo!uunet!portal!cup.portal.com!dan-hankins From: dan-hankins@cup.portal.com (Daniel B Hankins) Newsgroups: comp.sys.amiga Subject: Re: IRQ virus Message-ID: <13341@cup.portal.com> Date: 9 Jan 89 05:32:56 GMT References: <27@snll-arpagw.UUCP> Organization: The Portal System (TM) Lines: 7 Re self-checking programs: Not effective. The virus prepends itself to the program. After the virus executes, *then* in loads the regular program and runs it. The regular program never knows the virus was there. The checksum matches. Dan Hankins