Massive spam decrease as McColo hosting is taken offline
Earlier this week McColo Corp., a hosting provider in Northern California, was forcefully taken offline after discoveries by the computer security community that it was a major host of organizations allegedly engaged in spam activity.
In the days after the volume of spam sent dropped by a considerable amount.
Unfortunately the spam servers will undoubtedly re-locate, and ramp up production even more, so enjoy the lack of spam while it lasts.
In the afternoon of Tuesday 11/11, IronPort saw a drop of almost 2/3 of overall spam volume, correlating with a drop in IronPort’s SenderBase queries. While we investigated what we thought might be a technical problem, a major spam network, McColo Corp., was shutdown, as reported by The Washington Post on Tuesday evening.
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