ISC Feature of the Week: Presentations and Papers

Published: 2012-03-21
Last Updated: 2012-03-21 19:40:55 UTC
by Adam Swanger (Version: 1)
0 comment(s)


ISC's is a informative list of detailed presentations and papers written by ISC handlers or written about the ISC and DShield. Note that not all of them are hosted on this site.


Webcasts / Podcasts -

  • ISC Monthly Threat Updates webcasts on SANS' Webcast archive
  • Latest webcast PDF (Now posted along with webcast on access page)
  • ISC Podcasts main page

Flyers / Cheat Sheets -

  • ISC Flyer
  • IPv4 and IPv6 flyers

Reference Papers -

  • Link to SANS Reading Room

SANSFIRE Presentations -

Other Recent Presentations -

Older Presentations -


Post suggestions or comments in the section below or send us any questions or comments in the contact form on

Adam Swanger, Web Developer (GWEB, GWAPT)
Internet Storm Center (

Keywords: ISC feature
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Virus Bulletin Spam Filter Test

Published: 2012-03-21
Last Updated: 2012-03-21 00:54:57 UTC
by Johannes Ullrich (Version: 1)
1 comment(s)

Virus Bulletin updated its spam filter test, and found that compared to last year, spam filters are doing worse. Sadly, the detailed results are only for paid subscribers. But Virus Bulletin published a brief summary of the latest result as a teaser [1]. 

I think this is not all bad news. To understand this, one has to consider that the overall volume of spam has dropped significantly. The take down of some large botnets removed a lot of easy to classify spam off the net, leaving a more diverse "spam zoo" that is not as easy to classify. So I don't think this trend is as "worrying" as Virus Bulletin makes it sound. 




Johannes B. Ullrich, Ph.D.
SANS Technology Institute

Keywords: spam
1 comment(s)


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