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From: HUUSKONEN@hylka.Helsinki.FI (TANELI HUUSKONEN, DEPT MATH, HELSINKI, FI)
Newsgroups: comp.virus
Subject: Write-protecting Disinfectant (Mac) (Was Re: disinfecting nVIR...
Message-ID: <0011.8909251230.AA29228@ge.sei.cmu.edu>
Date: 22 Sep 89 12:29:31 GMT
Sender: Virus Discussion List 
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Approved: krvw@sei.cmu.edu

In article <0008.8909211142.AA16502@ge.sei.cmu.edu>, chinet!henry@att.att.com w
rites:
>>    When you finally get Disinfectant, and de-Binhex it and
>> de-Stuffit, make sure the diskette you keep it on is
>> write-protected!!!  This is very important; a virus cannot infect
>> an application on a write-protected diskette!
>
> This is a good idea, but not entirely necessary with Disinfectant.
> Disinfectant is resistant to all currently known viruses and will
> refuse to run if it has been changed in any way. ...

Two objections:
1)  You need to get a new copy of Disinfectant if a virus attacks it
    and makes it refuse to run.
2)  Someone _may_ write a Disinfectant-specific virus that prevents it
    from checking itself and from noticing the virus.