A South London teenager arrested on Tuesday is believed to be a core member of Lulz Security, a hacking group that penetrated security companies working with the US government, officials say.
Scotland Yard has not released the name of the 16-year-old boy, who has yet to be charged or released on bail. But he was suspected of involvement with Lulz Security, a spokesman said on Wednesday. Two other officials familiar with the investigation said he used the online nickname Tflow.

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