Security is a system
Security depends on frame, hardware, locking points, glass, shutters, installation and accessibility. A ground-floor window needs a different approach from an upper window.
Hardware and locks
Multiple locking points, lockable handles and reinforced hardware make forced opening harder.
Laminated glass
Laminated glass helps keep the pane together after impact. It can be advisable for ground floors, balcony doors and exposed openings.
Shutters and access points
A well-integrated shutter can add another barrier. Also review patios, terraces and hidden windows.
What to request in the quote
Ask for locking type, handle, glass, expected security level, shutter options and recommended reinforcements for each opening.