他这样的犯法行为极大地危及公共安全。

Such offences as his profoundly endanger public security.

《新英汉大辞典》

尼娜越来越担心杰克的怪异行为，而且她向杰克说出了她的担心——黑进私人电脑查寻文件是犯法的。

Nina grows worried about Jack's erratic behavior, and she voices her concern that he is breaking the law by tapping into private files.

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这种行为在不远的过去并不算犯法，联邦调查局发现他们的常规调查技巧在这里不管用了。

This had only recently been declared a crime, and the FBI found that their usual investigative technique didn't work.

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