In any case,the malicious software (malware in the jargon) penetrated at least one classified computer

问题描述:

In any case,the malicious software (malware in the jargon) penetrated at least one classified computer
network.
此句中的classified computer network 怎么翻译地道?
翻译的准确、地道的给分!
我英语不错,机器翻译的、自己感觉都说通的就不用回答了.

这里的 classified 指加密的,机密的.
全句:无论如何,恶意软件(也称 malware)至少成功攻击了一个加密的电脑网络.