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The majority of Unsolicited Commercial Email (UCE), or “spam” is sent by a relatively small group of dedicated professional spammers. The Register of Known Spam Operations (ROKSO) indicates that 80% of all spam comes from just 200 known spam operations. This data is in line with research completed by CipherTrust research scientists, which indicates that most spam originates from a relatively small group of tightly integrated spam networks.

While we’re all very familiar with the spam messages we receive each day, it is interesting to take a look at who these spammers are – to put a “face” to the problem, as it were. Following are four of the most notorious and prolific spammers in the world.

Alan Ralsky

Alan Ralsky

Mr. Ralsky is currently one of the most egregious spam senders in the world. His organization, based in Michigan since 1997, uses Chinese, European and domestic US-based servers to host and send spam to millions of email boxes daily. But that’s not enough for Ralsky. Not only does he operate as a spammer, but also as a host to other spammers.