operations security

counterespionage safety procedures and practices

en-GB/ˌɒpəˈɹeɪʃənz sɪˈkjʊəɹɪtɪ/
en-US/ˌɑpɚˈeɪʃənz sɪˈkjʊɹɪti/

หมวดหมู่:

information securitysecurity science