In addition to using First Data to collect money from customers, Pappas uses ScanAlert, a Web site security service.

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She thinks the domains will be attractive to financial institutions and large and midsize businesses seeking greater security on the Web, a service she says her domains would provide.

WSJ: The Race to Nab Web Addresses

That package includes not only Web site security but also content delivery, another expensive service.

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Those included posting private data, including credit-card and Social Security numbers, of Web users and launching distributed denial-of-service (DDoS) attacks against media sites who posted stories they didn't like.

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