What are the top domains used for spam?

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It's likely that most will expect domains belonging to popular web-based e-mail services are at the top of the list for the mountains of spam we receive everyday. That's not the case: the most common spam domains according to Chelmsford, Mass.-based security firm AVG are social networks. Facebook tops the list at 7.3 percent, followed by Twitter at 4.2 percent. Considering these are the top two ...

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