Virii

This virus is about 30KB of _assembler_ code: http://www.f-secure.com/v-descs/magistr.shtml -----Original Message----- From: Glenatacme(a)aol.com [mailto:Glenatacme@aol.com] Sent: Tuesday, July 17, 2001 10:36 PM To: classiccmp(a)classiccmp.org Subject: OT: Virii OT, yes (maybe some virii are >10 years old??) but related to programming in general. Plus, if no one on this list knows the answer, then there probably *isn't* an answer ;>) I received a virus in an e-mail attachment a few minutes ago. The sender is a wholesale supplier I'm acquainted with. NAV spotted the "W32.Magistr.corrupt" virus, could not repair the infected item, and asked for permission to delete the item, which I granted. I looked this virus up in the list of 50K+ virii that NAV currently claims to cover. No information was available, except that this virus is rare, it infects .exe files, and it is zero bytes in length. Now, I've cranked out a couple of boatloads of code over the last 19 years, and the smallest useful program I ever wrote was 3 bytes in length. It's easy enough to create a zero byte file, but as far as I can tell such a file can't *do* anything. How can I write a zero-byte program? How does NAV identify this virus if it's zero bytes in length? What real threat to my PC is an e-mail-propagated virus of length zero? WTF??? TIA, Glen 0/0