http://www.tech-faq.com/cell-phone-cloning.shtml

http://www.fcc.gov/cgb/consumerfacts/cellphonefraud.html

http://it.slashdot.org/article.pl?sid=05/12/17/1729245&from=rss

http://www.spendonlife.com/asktheexpert/cell_phone/cell_phone_security.aspx