Expert : Wireless carriers fix a bug that could have allowed criminals to hack into cell phones . Comment: SIM cards can identify a phone 's owner and store some sensitive personal data . The `` white hat '' hacker presented his findings at a computer-security conference .
Expert : Wireless carriers fix a bug that could have allowed criminals to hack into cell phones . A German cryptographer who hacked into SIM cards says he discovered the bug . SIM cards can identify a phone 's owner and store some sensitive personal data . The `` white hat '' hacker presented his findings at a computer-security conference .