Kaalakiota, or KK, is the largest of the Caldari megacorporations, and was run by Tibus Heth.
Ah, Aliza did not call the cipher she used uncrackable. It's possible that eventually it would have been cracked, but she would have revealed the key long before it was. What Aliza said was uncrackable was a one pad pass. That is the encryption method that she uses for sensitive information.