The cookie is created when users read an unsolicited e-mail with graphics in it, such as a banner advertisement off the Web, Smith said in a conference call.

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Whenever the advertising is for a little known country, it is important to give the people a lot of information in the advertisement such as the weather, language, food, etc.

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Specifically, the company purchasing a PPC campaign pays the advertising publisher every time an advertisement, such as a text link or banner, receives a click.

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The trick was to come up with a brilliant advertisement: the best, such as a commercial for Pears soap, ran for years.

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It diversified its revenue stream in related fields, such as opening restaurants, retail stores, car rentals, advertisement spaces and time share locals.

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The software, originally spread through classic methods such as spam, has moved on to more sophisticated attacks by providing links to infected web sites through popular social media content such as Twitter, YouTube, and Facebook, by feeding a corrupted advertisement into an ad network for web sites, and by poisoning search results called Search Engine Optimization (SEO) poisoning.

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