The numbers seem way off and too keystone cop to be true. 20 terabytes is not large for the NSA.
It can search BCC?? Only the sender has them. so everything would have to be collected at each ISP (which isn't impossible).. but I think the guardian has been trolled.
It can search BCC?? Only the sender has them. so everything would have to be collected at each ISP (which isn't impossible).. but I think the guardian has been trolled.