Windows and glazed facades comprise of a number of components and their security resistance is linked to how these components perform as a system, such as glass, seals, frame, connection to structures, hardware. The specification of these components will relate to the level of protection required, and not just the glass.
There are various types of glass available with different properties such as laminated, annealed/float, toughened, heat strengthened, laminated sandwiches and polycarbonate glass.