Some time ago I bought a scalper EA. Recently it has been cracked (partially, it doesn’t authenticate with the server and doesn’t the right set file for the pair, giving to the pirate a big economic loss), hence its programmers decided to protect it with MQLLock, making it uncrackable (at least, in theory).
How are the performances? Awful! After I installed the update, encrypted with MQLLock, it uses a lot of CPU share!