On the cyber-security threat, Blair's written testimony described an inability to contend with attacks using computer networks and telecommunications systems.

CNN: STORY HIGHLIGHTS

An attack on U.S. computer networks could knock out power grids, telecommunications, transportation and banking systems in a matter of seconds.

NPR: Does Averting Cyberwar Mean Giving Up Web Privacy?

These products are used in telecommunications networks, computer-controlled systems, security systems, emergency lighting, electric utilities and switchgear, medical equipment, rail signaling, renewable energy, and military and aviation equipment.

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