अष्टादशवर्गाणामारक्षविपर्यासं कारयेत् ॥ कZ_१०.१.१३ ॥
aṣṭādaśavargāṇāmārakṣaviparyāsaṃ kārayet
Dia hendaklah memastikan pengaturan keselamatan bagi lapan belas kumpulan/kategori itu diputar-gilirkan/diubah-ubah (supaya coraknya tidak dapat dijangka).
Operational security through randomized schedules and rotation—preventing adversaries (and insiders) from exploiting routine patterns.