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Douglas Schweitzer's picture
Douglas Schweitzer

The Security Sector

Cut down on spam did not go unnoticed

I wasn’t surprised when I heard that a major player in the world’s spam operations had its Internet connection severed. It’s no coincidence that my wife was just telling me how her email inbox was uncharacteristically “light” all day yesterday and was curious if I did anything here to mitigate the amount of spam we get. When I read Brian Krebs’ washingtonpost.com article "Host of Internet Spam Groups Is Cut Off" I learned that a U.S. based hosting service was operating servers and acted as a gateway for organizations that were involved in all sorts of illicit activities. So far, it doesn’t seem that the company, McColo Corp. has been charged with any crime, but nevertheless two Internet providers did cut off McColo’s Internet connectivity. The connection severing by both providers, Global Crossing and Hurricane Electric would indicate that they intend to cooperate with law enforcement and in distancing themselves from any illegal activities.

It’s about time that security researchers’ admonitions were heeded. Kudos to Joe Stewart, director of malware research at Atlanta-based Secure Works; he complained to McColo, but they told him they were addressing the botnet problem. In reality, they just relocated the Web sites to a different section of their network. Vincent Hanna is a researcher at Spamhaus.org and according to Krebs Hanna says McColo is known for being a “bulletproof hosting” business (Web servers that’ll stay online regardless of complaints about them).

What People Are Saying

It is just a temporary respite...

Since the ISPs have pulled the plug on McColo Corp, California based Hosting firm, the brute number s have come down, undoubtedly. But the botnet responsible behind the Spam has not been pinned and put out of business yet. They have just relocated.
The recession will also spawn a lot of Spammers, the unemployed, who would be out to make a quick buck. With passing time, Spam will be back with a bang. So the users have to sharpen their Spam guard.
We, at Cyberoam Internet Threats Research Team, have braced ourselves for a renewed Spam deluge from alternative source, once the botnet responsible for Spam reactivates. Traditional Spam filters that are based on Reputation Filters and training oriented Bayesian filters will have to undergo a re-learning process. The filters that will triumph will be filters that take the structure, volume and distribution pattern of the mail into account. These kinds of filters are language independent and content agnostic. Cyberoam UTM uses this type of Spam filters.

Here is the link to what

Here is the link to what might have happened:
http://www.computerworld.com/action/article.do?command=viewArticleBasic&articleId=9120538

They are back...

Check out...
They are back in business.

Good stuff

Yeah, I've noticed a big drop in spam too, spam is possibly the biggest nightmare for any sysadmin, as it really chews up bandwidth and puts strain on mail servers for nothing..

So finally someone is doing something about it, took long enough!