[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] [Y] [Z] eavesdropping attack education and security Einstein, Albert engineering, standard techniques environment variables 2nd error-handling issues, addressing essential network services only 2nd event logging 2nd |