[lolcraft]

What I find really interesting about the NSA is their Suite A: classified algorithms (!) used to protect the most sensitive documents (!!) with hilariously bad security records (!!!).

Take for instance the Skipjack cipher (https://en.wikipedia.org/wiki/Skipjack_(cipher)), a Type I cipher ("endorsed by the NSA for securing classified and sensitive U.S. Government information") which was evaluated, for the purpose of security, by "some of the world's most accomplished and famous experts in combinatorics and abstract algebra", and finally declassified due to concerns expressed by other cryptographers about its security.

Biham and Shamir broke it the day after it was declassified.

[pbsd]

They broke 16 out of 32 rounds, with an unrealistic amount of chosen-plaintext. It's not really something to write home about. Rijndael was selected as AES when the best known attack broke 7 out of 10 rounds.

[lolcraft]

They broke 31 out of 32 rounds.

In cryptography, if you break 1 bit, you've broken it. No excuse.

[BoppreH]

  Skipjack was designed using building blocks and 
  techniques that date back more than forty years.

I think it's safe to assume they have much stronger stuff now.