noun
message security labelling
Technical computing term referring to the process or system of applying security labels to messages, often in the context of information security or military messaging systems.
このシステムはメッセージ安全保護ラベルを自動的に付与します。
This system automatically assigns message security labels.
Compound of メッセージ (message), 安全 (security/safety), 保護 (protection), and ラベル (label). The exact derivation is uncertain; it is a technical term likely coined in computing contexts.