The major mobile networks account for 90 percent of all legitimate text message traffic — but only 38 percent of blocked spam messages. The rest of the spam messages is dominated by network unaffiliated virtual operators, according to a new report from Cloudmark.
These companies, known as NUVOs, provide app-based text messages for mobile phone users. But instead of sending messages to other users of the same app — like, say, Facebook, Skype, or WhatsApp — the NUVOs transmit the messages over traditional networks, so that anyone with a cell phone number can get the messages and respond to them.
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