Yes, all our bifold doors boast high security, multi-point locking on the master door, and steel locking rods within the intermediate panels.  All the gearing is concealed within the doors themselves, and we use high-security 3-star diamond-rated BSI security cylinders as standard for our locks.
If security is a concern, then we also recommend glazing the door with laminated glass, as this is the police-preferred specification for preventing window related crime.