The networks are the creation of a handful of North Korean defectors and South Korean human rights activists using cellphones to pierce North Korea's near-total news blackout. To build the networks, recruiters slip into China to woo the few North Koreans allowed to travel there, provide cellphones to smuggle across the border, then post informers' phoned and texted reports on Web sites.
[...] The North Korean government can monitor cellphone calls, but tracing them is harder, so the police rove the countryside in jeeps equipped with tracking devices.
The informants call him once a week; they never give their names, and they hide the phones far from their homes. Despite those precautions, they are sometimes caught. This month, Mr. Ha's Web site reported that an arms factory worker was found with a cellphone and confessed to feeding information to South Korea. A source said the informant was publicly executed by firing squad.
Don't suspect your neighbor, report him
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