
Read this: SIM Cards Have Finally Been Hacked, And The Flaw Could Affect Millions Of Phones - Forbes

Summary: Yet after three years of research, German cryptographer Karsten Nohl claims to have finally found encryption and software flaws that could affect millions of SIMcards, and open up another route on mobile phones for surveillance and fraud. The two-part flaw, based on an old security standard and badly configured code, could allow hackers to remotely infect a SIM with a virus that sends premium text messagesdraining a mobile phone bill, surreptitiously re-direct and record calls, and with the right combination of bugs carry out payment system fraud. Payment fraud could be a particular problem for mobile phone users in Africa, where SIM-card based payments are widespread. - forbes.com
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