also: セキュリティー
noun
Broadly used for safety, protection, and measures against threats, similar to English 'security'. Common in IT, physical security, and general safety contexts.
このビルはセキュリティが厳しい。
This building has tight security.
パソコンのセキュリティソフトを更新した。
I updated the security software on my computer.
Most common modern spelling; loanword from English 'security'.
Variant with long vowel marker; also common, especially in older or more formal contexts.
安全 is a native Japanese word for 'safety' or 'security' in a general sense, while セキュリティ is a loanword often used in technical, IT, or formal security contexts.
Loanword from English 'security'.