b) Phòng, ch?ng t?n công và b?o v? ho?t ??ng ?n ??nh c?a h? th?ng thông tin quan tr?ng v? an ninh qu?c gia;eleven. Domestic enterprises that are set up or registered for institution As outlined by legal guidelines of Vietnam with their headquarters situated in Vietnam.b) Ng?n ch?n vi?c chia s? thông tin, xóa b? thông tin có n?i dung quy ??n