U.S. President Barack Obama has nominated an expert cryptologist to head the National Security Agency at a time when the agency is under pressure to reform its surveillance.
![](https://www.tahawultech.com/wp-content/uploads/2014/02/United_States_Navy_Vice_Admiral_Michael_S._Rogers-1-840x440.jpg)
U.S. President Barack Obama has nominated an expert cryptologist to head the National Security Agency at a time when the agency is under pressure to reform its surveillance.
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