Correction to VBSpam results

Posted by   Virus Bulletin on   Nov 27, 2012

Spamhaus and SURBL results re-evaluated.

The most recent VBSpam results incorrectly stated that SURBL failed to detect a blacklisted URL in any of the emails in the Wombat feed of phishing emails; the performance of Spamhaus on the feed was also affected.

We have since discovered that a technical glitch on our side meant that none of the domains found in the emails in the Wombat feed were scanned against the SURBL domain-based blacklist, which consequently was reported not to have 'blocked' any of the emails in this feed. While it is impossible to get accurate results from checking the domains several weeks after the emails were sent, we have reason to assume that a significant portion of the emails in this feed contained at least one blacklisted domain.

The same glitch affected another participating domain-based blacklist, the Spamhaus DBL, whose performance contributes to the Spamhaus ZEN+DBL results. Thus, the performance of this solution on the Wombat feed was in fact better than the 47% catch rate reported.

The issues did not affect the performance of either blacklist on other feeds in the test, nor did it affect any of the other participating products. We offer our apologies to both SURBL and Spamhaus.

Posted on 27 November 2012 by Martijn Grooten



Latest posts:

VB2018 video: The Big Bang Theory by APT-C-23

Today, we release the video of the VB2018 presentation by Check Point researcher Aseel Kayal, who connected the various dots relating to campaigns by the APT-C-23 threat group.

VB2019 London - join us for the most international threat intelligence conference!

VB calls on organisations and individuals involved in threat intelligence from around the world to participate in next year's Virus Bulletin conference.

VB2018 paper: Tracking Mirai variants

Today, we publish the VB2018 paper by Qihoo 360 researchers Ya Liu and Hui Wang, on extracting data from variants of the Mirai botnet to classify and track variants.

VB2018 paper: Hide'n'Seek: an adaptive peer-to-peer IoT botnet

2018 has seen an increase in the variety of botnets living on the Internet of Things - such as Hide'N'Seek, which is notable for its use of peer-to-peer for command-and-control communication. Today, we publish the VB2018 paper by Bitdefender…

New paper: Botception: botnet distributes script with bot capabilities

In a new paper, Avast researchers Jan Sirmer and Adolf Streda look at how a spam campaign sent via the Necurs botnet was delivering the Flawed Ammyy RAT. As well as publishing the paper, we have also released the video of the reseachers' VB2018…

We have placed cookies on your device in order to improve the functionality of this site, as outlined in our cookies policy. However, you may delete and block all cookies from this site and your use of the site will be unaffected. By continuing to browse this site, you are agreeing to Virus Bulletin's use of data as outlined in our privacy policy.