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- Path: sparky!uunet!cs.utexas.edu!rutgers!cmcl2!panix!rpowers
- From: rpowers@panix.com (Richard Powers)
- Newsgroups: comp.org.eff.talk
- Subject: Re: Beneficial Virus?
- Message-ID: <1992Dec31.193459.765@panix.com>
- Date: 31 Dec 92 19:34:59 GMT
- References: <725430469.26792@zooid.guild.org> <1992Dec30.235206.20192@panix.com> <1992Dec31.145332.9194@nastar.uucp>
- Organization: PANIX Public Access Unix, NYC
- Lines: 45
-
- In <1992Dec31.145332.9194@nastar.uucp> phardie@nastar.uucp (Pete Hardie) writes:
-
- >In article <1992Dec30.235206.20192@panix.com> rpowers@panix.com (Richard Powers) writes:
- >>Quite a broad statement there. I came up with an idea (never
- >>implemented BTW) for a file compression virus for use on my home
- >>computer(s). Basically it would be a standard virus, but it would
- >>compress a file it prepends itself to, so that upon execution
- >>it would uncompress the file for normal execution. It would _only_
- >>infect files that could benefit from compression. It would also check
- >>for some file or other sort of marker on the system that the user
- >>would have placed to give the virus permission to spread. Thus
- >>keeping it from spreading to anyone who didn't want it around.
-
- >Beneficial? Suppose you need to copy an executable from one system to another,
- >and the new system does not have the marker? Or the disk crashes across
- >the marker? How do you get the files back?
-
- Well, its becoming obvious that you and others here have a deep
- prejudice against programs which self-replicate. I came up with a
- simple outline for a virus which is beneficial, just to use as an
- example that such *is* possible, and you can't take that for what it
- is. You have to pick holes in the idea. *shrug*
-
- Just for the sake of argument:
-
- If you copy an executable from one system to another without a
- permission file/marker it would still run. The virus would just not
- stay in memory after doing its job of decompressing the file it was
- attached to, and thus not spread. Alternatively (prefferred), it
- could alert the user to its existence, and give the user the choice of
- letting the virus stay in the file, or telling the virus to remove
- itself from the file.
-
- What if the marker is lost? So what? You don't need to "get the
- files back". They didn't go anywhere. They are still quite usable.
- The only thing which is changed, is that without permission, the virus
- will not spread itself.
-
- And don't you make backups? So you restore the permission file. Why
- is this any different from when you lose any other file?
-
- --
- Richard Powers / Disclaimer: My keyboard is \ Computer=Amiga
- rpowers@panix.com < screwy. Missing letters > Music=Industrial
- Hail Eris! \ should be expected. / Food=Vegetarian
-