Greek vodafone writeup
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ADAE's technical experts also say the interceptor phones were in contact via phone calls and text messages with various overseas destinations, namely the U.S., including Laurel, Md., the U.K., Sweden and Australia, according to the ADAE preliminary report. Some of these calls and messages were initiated and received directly from the 14 interceptor phones and some were relayed via a second group of at least three other prepaid phones that also were in contact with the 14 interceptor phones.
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http://online.wsj.com/article_email/article_print/SB115085571895085969-lMyQjAxMDE2NTIwMTgyNTE1Wj.html