What Was the Effect of Shutting Down McColo?

From Light Blue Touchpaper (Richard Clayton)

On 11 November 2008 McColo, a Californian server hosting company, was disconnected from the Internet. This took the controllers for 6 major botnets offline. It has been widely reported that email spam volumes were markedly reduced for some time thereafter. But did disconnecting McColo only get rid of “easy to block” spam? Read the full story [Light Blue Touchpaper].

From Light Blue Touchpaper (Richard Clayton)

On 11 November 2008 McColo, a Californian server hosting company, was disconnected from the Internet. This took the controllers for 6 major botnets offline. It has been widely reported that email spam volumes were markedly reduced for some time thereafter. But did disconnecting McColo only get rid of “easy to block” spam? Read the full story [Light Blue Touchpaper].

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