Tag Archives: SMS Spam

How mobile spammers verify the validity of harvested phone numbers – part two

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By Dancho Danchev

Just as we anticipated earlier this year in our “How mobile spammers verify the validity of harvested phone number” post, mobile spammers and cybercriminals in general will continue ensuring that QA (Quality Assurance) is applied to their upcoming campaigns. This is done in an attempt to both successfully reach a wider audience and to charge a higher price for a verified database of mobile numbers.

In this post I’ll profile yet another commercially available phone/mobile number verification tool that’s exclusively supporting Huawei 3G USB modems.

More details: Continue reading →

Mobile spammers release DIY phone number harvesting tool

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By Dancho Danchev

Need a good reason not to connect to the public Web with your phone? Wonder where all that SMS spam is coming from? Keep reading.

Mobile phone spammers have recently released a new version of a well known phone number harvesting tool, whose main objective is to crawl the public Web and index mobile phone numbers, which will later be used for various malicious and fraudulent purposes.

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Managed SMS spamming services going mainstream

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By Dancho Danchev

Are you receiving SMS spam? According to the latest reports, millions of mobile users do.

The trend is largely driven by what Webroot is observing as an increase in underground market propositions offering managed SMS spamming services to new market entrants not interested in building and maintaining the spamming infrastructure on their own.

In this post, I’ll profile a recently advertised managed service offering SMS spamming capabilities to potential customers, discuss the latest innovations in this field, their impact to mobile security, and what are some of the key factors contributing to the growth of SMS spam.

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