单词well-secured
And still other attacks are motivated by the sheer challenge of penetrating a well-secured system.
还有另外一些攻击者完全出于寻求刺激性的挑战目的，想渗透保护良好的系统。
The puppet masters have these well secured within their evil clutches.
傀儡操纵者用他们邪恶的爪子死死抓住一切。