230% Increase in Spam Attacks
“It looks like we're seeing a ramp-up in Reverse NDR attacks” said the opening line of an email I received from the President of CMS. To say the least it was an understatement.230%, that’s the increase the CMS email "stat man" has seen in RNDR attacks over the past month.
Why? Well the answer is simple, Christmas and the rest of the holidays are just around the corner so spammers are taking advantage of the increase in shopping that is just about to occur.
CMS coined the term “Reverse NDR” attack back in 2003 and since then it’s come into common use on the Internet (here, here, here, and many more) and Discussion Groups (here, here , here and of course, many more).
If you’re not familiar with this backdoor, indirect relay spam attack check out the main RNDR page on the CMS website. There’s also a quick test to take to determine your email system's RNDR vulnerability.
So, I hope your spam filter can deal with RNDR and other spam email that’s sure to flood cyberspace in the upcoming weeks. I know Praetor can.
And finally, be aware that solutions to RNDR, other than Praetor, are incomplete and actually increase the possibility of Directory Harvest Attacks.
Ho, Ho, Ho. The holiday spam flood is here.
AAS
Tags: spam filter Holiday Christmas antispam Directory Harvest RNDR Reverse NDR
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