Posts Tagged: Mobile Spammer


How mobile spammers verify the validity of harvested phone numbers

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Have you ever received a blank call, and no one was on the other side of the line? What about a similar blank SMS received through your mobile carrier’s Mail2SMS gateway? There’s a high probability that it was a mobile spammer who’s automatically and efficiently verifying the validity of a recently harvested database of mobile numbers, with QA (Quality Assurance) in mind. These verified databases will be later on used as the foundation for a highly successful spam/scam/malicious software disseminating campaigns, thanks to the fact that the cybercriminals behind them will no longer be shooting into the dark. How do they do […]

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