[R-SIG-Mac] R-SIG-Mac Digest, Vol 111, Issue 6

Carl Witthoft carl at witthoft.com
Thu May 3 23:16:00 CEST 2012

Simon's response may have misled some folks:

Naive Windows users (redundant?)  don't understand either icon 
relationships or how to display full file names.  Those "bad" zip files 
are actually "sneakyname.zip.exe" .

AFAIK none of the more common unzipping utilities will launch an 
executable after unpacking the archive.  It may well be that some idiot 
(at Microsoft) set things up so that a new, say, .img file gets 
automounted sort of like what Windows does with an inserted audio CD. 
Otherwise, unpacking a true zip, or gzip, or tar.gz file will not lead 
to any autoexec.

On 5/3/12 11:56 AM, r-sig-mac-request at r-project.org wrote:
-- DWin wrote:
> So I'm now wondering if there are two components to my misunderstanding:
> 1) My experience with Windows is that zip files are sometimes delivery
> vehicles for executable files and htat the OS can be configure to auto-
> execute such files on decompression without further intervention. I
> worried that MacOS might have the same potential.
Simon wrote:
On Windows, yes, executables can be masqueraded as zip files with 
interesting consequences if the tools on the machine are broken enough


Sent from my Cray XK6
"Quidvis recte factum, quamvis humile, praeclarum."

More information about the R-SIG-Mac mailing list