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Hacking phones is too easy. Time to make it harder
Regulators have avoided the problem for too long
When phone networks got wind of this, they changed how the system worked by splitting the channel carrying the voice signal from the one managing the call. But the system, built when there were only a handful of state-controlled telecoms companies, has become woefully inadequate for the mobile age, leaving dangerous vulnerabilities at the heart of international phone networks. Earlier this year an American cyber-security official told the Federal Communications Commission (FCC), a regulator, that similar attacks had taken place in America.
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