I've dropped .js, .html, and .lnk as top level extensions from those
signatures as they were causing too many problems.

Zip.Suspect.MiscDoubleExtension-zippwd-8:*:(?i)((\.doc)|([
_.-](7z|avi|bmp|csv|docx|gif|gz|jpeg|jpg|mov|mp3|mp4|mpg|pdf|png|pps|ppt|pptx|psd|rar|tar|tar\.gz|tif|tiff|txt|wav|xls|xlsx|zip)))[
_.-]*\.(action|air|apk|app|awk|bin|csh|deb|dmg|jar|jsx|ksh|osx|out|pkg|rpm|sh|swf)$:*:*:*:*:*:*

I was also missing an end line anchor on a few of the signatures, this has
been fixed too.

I really appreciate your patience and communication while we fine tune
these. They're covering a lot of email borne threats, and if that is not
your use case, white listing is a great option.

Let me know if you are still getting alerts that are problematic.

Thanks,
Douglas

On Thu, Sep 25, 2014 at 2:10 PM, Kris Deugau <kdeu...@vianet.ca> wrote:

> Tim Edwards wrote:
> > The recent addition of Zip.Suspect.MiscDoubleExtension signatures has
> been
> > causing a lot of trouble for us, as it keeps getting flagged for
> completely
> > innocuous files such as foo_handle_pdf.js.
>
> One common thread I've been seeing is that people reporting specific
> cases are reporting what I would consider a misfire for a "doubled
> extension";  that filename above only has one extension (.js) in my view.
>
> I would suggest updating this upstream to more narrowly target actual
> doubled extensions.
>
> I'm a little surprised I haven't see an FP locally.
>
> -kgd
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