It was 'known flawed' in 2007. What was not know was whether or not anyone possessed private keys that would have made that known flaw a known exploit. The kn

It was 'known flawed' in 2007. What was not know was whether or not anyone possessed private keys that would have made that known flaw a known exploit. The knowledge that the NSA did indeed have a backdoor didn't come along until Snowden.