Recent ships of the human space fleet are equipped with #DiffieHellman-Drives (which enable them to exchange their position with other, far away ships without allowing outsiders to intercept) and #FloydSteinberg shields (which diffuses all incoming attacks).
Interstellar navigation was very easy after all ships computers were programmed with the #Bresenham-Algorithm.
All crew members were trained in all details of the #Kernighan-#Ritchie protocol.